Excel表格技巧:巧用REPT函数复制文本

本教程适用版本:WPS 365 点击免费使用

REPT函数是一个文本函数,其函数的主要作用是按照定义的次数重复显示文本,也就是复制文本。

以此表为例,接下来和大家讲讲这个函数的具体使用步骤。

>免费升级到企业版,赠超大存储空间

■ 选中单元格,点击插入函数,在查找框中查找并选中REPT函数,点击确定。

此时弹出参数框,我们要输入要重复的文本字符串和文本重复次数。

需要注意的是,文本重复次数必须为正数,当文本重复次数为0时将返回“”。

当文本重复次数为负数时,将返回错误值 #VALUE!。

>免费升级到企业版,赠超大存储空间

■ 我们在字符串中填入A2,重复次数中填入3,点击确定,可以看到A2单元格内的字符重复显示了3次。

>免费升级到企业版,赠超大存储空间

这个函数能帮助我们快速重复输出指定字符,快学起来~

 

Fall Dusk | Modern Gray Dress (松间照)

Tea bag making machine

DESCRIPTION

* Pre-Order 30 days

* A Set of Hanfu(3 pieces): Traditional – Tank Top + Skirt + Cover-up

                                                 Modern – Crop Top + Skirt + Blouse

* Material: 80% Lyocell, 20% Nylon

* Hemline: 10m

* Model: 162cm, 53kg, Size M

* Unit: cm

Modern Bust Sleeves Length Shoulder Waist Skirt Length

Suggested Height

Antifouling properties of lignin for marine coatings

Click:裝潢

dog cake topper 4 inch

Study is based on preliminary findings that point toward lignin’s efficacy against seawater organisms.

Antifouling properties of unmodified kraft lignin for potential use in marine coatings were investigated in a new research project. The study was based on preliminary findings that pointed toward lignin’s efficacy against seawater organisms during laboratory tests. Coatings were formulated that contained lignin as a filler and had a pigment volume concentration above the critical pigment volume concentration. This ensured direct interaction between lignin and seawater organisms, as the lignin particles remained incompletely wetted by the binder.
Moreover, all formulations were water-borne to mitigate the release of volatile organic compounds. Despite the initial promise, the antifouling performance of the formulated lignin coatings during field experiments at the CoaST Maritime Test Center was limited, and the anticipated mechanism must be reconsidered. Additionally, it was found that high lignin concentrations, while facilitating organism interaction, compromised the coating’s mechanical properties.
Nevertheless, the water-borne coating formulation introduced here might provide a foundation for other researchers to further investigate lignin’s potential as a bio-based pigment or a filler in coatings.

Source of the study: Journal of Coatings Technology and Research, January 2024

Reading tip waterborne coatings

The EC Tech Report Waterborne Protective Coatings gives you an extensive up-to-date bundle on protective coatings, focusing on water-borne solutions, with articles, videos and other content handpicked by the European Coatings Team. In addition to cutting-edge technical articles, the Tech Report is rounded off with valuable market insights and key fundamentals on water-borne protective coatings.

BASF: NPG and PA with product carbon footprint of zero

map china guizhou province

According to the company, BASF for the first time offers neopentyl glycol (NPG) and propionic acid (PA) with a cradle-to-gate product carbon footprint (PCF) of zero. 

BASF achieves the zero PCF for NPG and PA by using renewable raw materials in its Verbund production system via its biomass balance (BMB) approach. For NPG, BASF additionally uses renewable energy for production.

“Drop-in” solutions

The new products are “drop-in” solutions: According to the company they are identical in quality and properties to the standard products, allowing customers to use them in their production without the need for adjustments to their existing processes.

An essential field of NPG application is powder coatings, especially for the construction and automotive industries as well as for household appliances. PA, which is fully biodegradable, is ultilised as a mold inhibitor for the preservation of food and feed grains. Other application areas include the production of crop protection agents, flavors and fragrances, pharmaceuticals, solvents and thermoplastics.

Evonik invests in Interface Polymers

Pyramid tea bag packing machine

Evonik has invested in the British company Interface Polymers. This company’s additives simplify the processing of plastics such as mixtures with polyethylene or polypropylene.

The poor compatibility of polyethylene and polypropylene with other materials is a drawback. So far, costly and time-consuming surface preparation was the only solution. According to a press stement, the additive technology developed by Interface Polymers makes such preparation unnecessary. Moreover, it greatly reduces the amount of additives needed. As a result, mixed plastics are easier to recycle.

Using the technology in paints and coatings

Bernhard Mohr, head of Venture Capital at Evonik: “Many modern applications would be unthinkable without plastics, but recycling them is still a big challenge. Interface Polymers’ additive technology offers a solution and is an excellent fit with Evonik’s Circular Plastics Program.” The Sustainability Tech Fund launched by Evonik in 2022 is adding Interface Polymers to its investment portfolio. In addition to the investment by the Sustainability Tech Fund, Evonik’s Coating Additives business line has agreed an extensive development partnership with Interface Polymers with the aim of using its technology in paints and coatings.

5 Ways to Combat the Machinist Shortage in 2023

electric confetti cannon

Time to read: 5 min

Over the past few decades, there has been a steady increase in manufacturing demand, but simultaneously, there’s been a drop in the number of machinists entering the market. This shortage is hindering the growth of many businesses that have plenty of demand but simply cannot find the right people to drive growth on the manufacturing floor. 

There are many strategies to help your company attract machinists, such as offering increased rates, better work-life balance, and other perks like relocation assistance. However, at this point, these benefits are commonly offered, so it’s time to consider new strategies.

Combating the Machinist Shortage in 2023

With the demand for manufacturing only increasing, attracting new machinists and optimizing existing processes are critical to ensure your company stays competitive. Here are five methods to help your company overcome the machinist shortage in 2023:

Automation & Optimization

Automated systems are far from being capable of completely replacing machinists. Modern machinists still must program CNC machines, select the correct tools, spot potential challenges, and perform problem-solving tasks as they arise during normal machining activities. However, automated systems can be a force multiplier for existing machinists that significantly increases their productivity. Examples of physical automation can include ATCs (Automatic Tool Changers) and automated machine tending using robotic arms.

In terms of optimization, there are many potential interventions that can increase overall productivity. One example is the software used by machinists. Much of a machinist’s time is spent setting up programs for the machines to run. These programs are complex and require a thorough understanding of how to machine different materials, which tools to use, and how to set up a part to achieve the highest possible machining efficiency. However, newer software systems incorporate much of this knowledge into their systems, so machinists can spend less time setting up the program. 

As far as attracting the top talent goes, showcasing your repertoire of technological advancements goes a long way in recruiting. Machinists geek out on new tech, and upgrading to newer systems will make your current machinists happy and more productive. Using automation to improve the productivity of existing machinists can give you time to find long-term solutions to increase your machining workforce.

Internships & Apprenticeships

Internships and apprenticeships are common methods of finding potential candidates and filling gaps within a manufacturing environment. While an apprentice or an intern won’t have the required skills to hit the ground running on their own, as long as they have a solid understanding of the fundamentals of machining, they just need general supervision by more experienced machinists. As such, they can assist your machinists with simpler and repetitive tasks while learning more complex tasks.

Engaging with local trade schools is a good way to find potential interns or apprentices that are looking for work and have basic machining knowledge. So, attend job fairs, post on trade school job boards, or even go speak to a class — get creative! Interns aren’t a permanent solution, but when they have completed their studies you can offer them employment in an environment they already know. And internships provide valuable experience for up-and-coming machinists while giving them an inside look into your company before committing to a full-time position.

Reskilling Existing Employees

Another option for increasing your machinist workforce is to re-skill existing employees. Some employees may want to move from other departments into production, and training them up can help plug gaps. Plus existing employees already know how the company’s policies and procedures work and are a known culture fit.

Ideally, the employees that move are from a position that is easier to fill than a machinist or machinist assistant. However, training a machinist from scratch is a lengthy process and requires a deep understanding of a broad range of topics. Also, the person may need some formal training, which will not only cost money but also remove that person from the floor for a while. However, a reskilling program increases employee retention and provides a long term solution to the machinist shortage.

Build an Online Presence 

One of the most creative methods for recruiting machinists is to build a strong online presence. There are many groups of machinists who have created a strong following online — one of my favorites is Titans of CNC. Many of these influencers are from fully-fledged manufacturing companies that have social-media departments. The key is to find clever ways to show your company’s daily work without giving away any potential IP (intellectual property), and you can also create unique projects to market. 

Many companies find an audience on YouTube or Instagram, but in order to optimize your online presence, you’ll need a dedicated, social media expert — not only to make content that looks professional, but also to tweak and promote the content so it reaches your target market. 

When done well, social media improves your brand awareness and attracts potential machinists by showcasing the quality work your company is doing on a day-to-day basis. Make good enough content and you might even have skilled machinists reach out to you for a job!

Incorporate Cutting-Edge Technology

Machinists like to work on cutting-edge equipment, so it’s a good idea to incorporate cutting-edge machining equipment into your workflows. While this tech and the training required are expensive, not only will it attract experienced machinists who want to grow their skills, but it will also improve machining speed, productivity, and overall part quality — which can offset the initial capital investment over time.

Will Machinists Be Replaced by Robots?

You may think that, in a few years, machinists will no longer be needed because of the progress being made within the automation sphere. However, most of the easily automated machinist tasks have already been automated  by CNC tending robots — and there is still a machinist shortage. This is because machining is a complex task that requires a breadth of knowledge that cannot be programmed into a simple robot arm. For the foreseeable future, machinists will simply integrate more robots into their workflow to increase productivity and keep pace with ever-increasing manufacturing demand.

How Important Is a Machinist?

Machinists are required to program tool paths, set up equipment, and operate CNC mills, turning centers, and lathes. Without a machinist, it would be impossible for a layperson to operate these expensive machines, so machinists are absolutely critical – they’re the only people who can turn a CAD model into a finished part.

The machinist shortage in 2023 doesn’t show any signs of improvement in the short term and, while the strategies in this article can work, they require time and investment that you may not have. That’s why Fictiv is here to plug your gaps in production and help you stay competitive in the market. 

Fictiv is your operating system for custom CNC machined mechanical parts. Our expert engineers and machinists ensure you get quality components no matter how complex your designs. So, create an account and upload your design today to see what our instant, CNC machining quote process, DFM feedback, and intelligent platform can do for you — we deliver complex parts at ridiculous speeds!

170M3521

Glass bottles

The 170M3521,from Bussmann / Eaton,is Specialty Fuses.what we offer have competitive price in the global market,which are in original and new parts.If you would like to know more about the products or apply a lower price, please contact us through the “online chat” or send a quote to us!

  • Specifications
  • Package
  • Payment
  • Shipping
  • Contact US
Product Category :
Specialty Fuses
Manufacturer :
Bussmann / Eaton
Applications :
Approval Agency :
Breaking Capacity @ Rated Voltage :
Class :
Current Rating (Amps) :
delivery time :
24 hours
Fuse Type :
Specialty Fuses
Mounting Type :
Holder
Package :
Bulk
Package / Case :
Part Status :
Active
Response Time :
Fast Blow
Series :
170M Fuses
Size / Dimension :
2.323L x 1.772W x 2.008H (59.00mm x 45.00mm x 51.00mm)
Type :
HIGH SPEED FUSE
Voltage Rating – AC :

Qt5-15 Fly Ash Bricks Machine Manufacturers in Raipur

block production machine

QT5-15 Fully Automatic Concrete Cement Brick Hollow Block Making Machine
Siemens brand PLC control system / Siemens motor / Omron switch/ International standard steel

QT5-15 block making machine is the latest developed equipment product, which is special purpose equipment for making building block making machine. The material can be fly ash, slag, gangue or other industrial waste, river sand, gravel, cement, etc. Make different sizes of hollow blocks, porous blocks, curbs, pavement blocks. If you add a color machine, you can make layer blocks.
QT5-15 block machine full automatic ,adopts Siemens brand PLC and Touch Screen .Vibrate motors also Siemens brand. So our machine runs stable and effective . Our machine makes the blocks with very good density and high quality. I am sure you will satisfied with it.

 

Technical specifications
Overall Dimension 5120*1950*2810mm
Cycle Time 15-25s
Total Power 26.5KW
Pallet Size 1100*550mm
Raw Materials Crushed stone, sand, cement, dust and coal fly ash, cinder, slag, ganaue, gravel, perlite and other industrial wastes.
Applied Products Concrete blocks, solid/hollow/cellular masonry products, paving stones with or without face mix, garden and landscaping products, slabs, edgers, kerbstones, grass block, slope blocks, interlocking blocks, etc.
Applied fields Widely used in buildings, road pavings, squares, gardens, landscaping, city constructions, etc.


——Details——

——Customer Project——

 

 

——Packing And Shipping——

——Company——

QINGDAO HF MACHINERY Co., Ltd is the professional manufacturer and exporter of technology block machines. We had exported to more than 116 countries from the Philippines, Russia, Egypt, South Africa, Ghana, Oman, India, Armenia,Israel, Chile, etc.

We have more than 50 technicians to guarantee superior installations and service after-sales to help customer install the machine and undergo proper trainingabroad.

We adopt advanced vibration technology, durable hydraulic pressure system and system advanced Siemens PLC intelligent control system. By adopting the technology and control system above, our block machine has higher production efficiency and lower failure rate. The blocks produced by our machines have higher density, higher strength, more beautiful and accurate dimensions. It is our honor to serve some large block factories and companies of construction in Mexico, Belize, Honduras, El Salvador, Panama, Colombia, Ecuador, Peru, Bolivia, etc. We have a wealth of experience in the South American market.

We warmly welcome customers from all over the world who come to visit our factory and discuss long-term cooperation.

 

If you interested in our block machine, please feel free to contact me.

自動生成內容的崛起:如何影響數位行銷與消費者信任?

Lighting

摘要

自動生成內容正迅速崛起,對數位行銷及消費者信任帶來深遠影響,因此了解其背後的挑戰與機遇至關重要。 歸納要點:

  • 自動生成內容引發的倫理與法律問題讓我們必須重新思考內容的真實性與版權歸屬,未來可能需要更明確的規範來避免糾紛。
  • 隨著AI技術持續進步,如何評估和提升AI生成內容的品質成為挑戰,特別是在理解人類情感和文化差異方面。
  • 品牌在利用AI生成內容時需謹慎,以確保產出的資訊符合品牌形象,同時展現獨特性和吸引力。

整體而言,自動生成內容不僅是技術進步的結果,更需要專家深入探討以平衡效率、品質與品牌形象之間的關係。

自動生成內容的崛起:新時代的數位行銷浪潮?

自動生成內容已成為數位行銷的關鍵驅動力,不再僅僅是「製造內容」。現代 AI 工具能夠根據品牌風格和受眾需求,自動生成文案、圖片以至影片,這是否使得企業在不同平台上能更靈活地針對目標客群?透過資料分析調整發文策略,品牌參與度和轉換率勢必會提升。你準備好迎接這場數位行銷的新浪潮了嗎?
本文歸納全篇注意事項與風險如下,完整文章請往下觀看

  • 須注意事項 :
    • 自動生成內容可能缺乏人類情感與細膩性,無法有效傳達品牌故事或引起消費者的共鳴,進而影響品牌忠誠度。
    • 過度依賴自動生成內容可能導致創意枯竭,使品牌風格變得一致且單調,無法吸引多樣化的受眾群體。
    • 自動生成內容的質量參差不齊,若未經適當審核及編輯,容易出現錯誤資訊或語言不通順的問題,損害企業形象。
  • 大環境可能影響:
    • 隨著技術的不斷進步,自動生成內容日益普及,小型企業可能難以競爭並維持獨特性和市場份額。
    • 消費者對於自動生成內容的識別能力提高,一旦被察覺為機械化產出,將迅速失去信任,使品牌形象受到威脅。
    • 法律和道德問題日益突出,如版權歸屬和虛假宣傳等問題將成為企業在使用自動生成內容時必須面對的重要挑戰。

自動生成內容的影響:優點與劣勢並存

## 自動生成內容的影響:優點與劣勢並存

**最新趨勢:AI 模型的「個性化」定製**

行銷代操秘訣大公開!升級你的網路行銷策略,讓品牌脫穎而出

Click:dance costume costumes

Doshisha

摘要

在競爭激烈的數位時代中,「行銷代操秘訣大公開!」文章揭露了提升品牌知名度和客戶參與度所需的關鍵策略。對於企業來說,了解這些信息至關重要。 歸納要點:

  • 行銷代操的秘訣寶典:透過瞭解目標群體和創建有吸引力的內容提升網路行銷實力。
  • 掌握行銷代操趨勢:利用最新科技和平台,如人工智能與社交媒體,引領網路行銷新紀元。
  • 獨樹一幟的行銷代操思維:透過創新策略和個性化溝通打造令人驚豔的品牌形象。
  • 深入探討YMYL原則(Your Money or Your Life):確保所有分享資訊具有高度信譽度,以增加讀者信任並提升SEO表現。

本文從基礎到專業層面詳細介紹了如何通過創新、趨勢把握、以及堅持高信譽度資訊分享等方法顯著提高品牌在網路上的影響力。

行銷代操的秘訣寶典:提升網路行銷實力

在這個資訊爆炸的時代,想要在網路行銷的海洋中脫穎而出,確實需要一些小秘訣。今天,我要和大家分享幾項提升網路行銷實力的寶貴技巧。明白你的目標受眾是誰至關重要。問自己:他們在哪裡?他們最關心什麼?接著,內容為王的原則依然適用。創造有價值、引人入勝且易於分享的內容是吸引受眾注意力的關鍵。當然,別忘了利用資料分析來最佳化你的策略;測試、學習並調整以達到最佳效果。

除此之外,SEO(搜尋引擎最佳化)仍舊是不可或缺的技能集之一。理解並運用好SEO技巧可以讓你的品牌更容易被目標顧客發現。還有,社交媒體平台是展示品牌個性和建立與顧客互動關係的絕佳場所;靈活運用它們將會極大提升品牌知名度。

以上就是幾點小建議,希望能助你一臂之力,在這波數位浪潮中乘風破浪!
本文歸納全篇注意事項與風險如下,完整文章請往下觀看

  • 須注意事項 :
    • 高度依賴數位平台和科技可能導致忽視傳統行銷渠道,限制了觸及更廣泛目標群體的可能性。
    • 過分追求創新和個性化可能會造成資源分散,影響到行銷活動的整體效率和成本控制。
    • 保持內容高信譽度需要不斷更新知識庫並進行質量控制,這可能對小型企業或初創公司是一大挑戰。
  • 大環境可能影響:
    • 日益加劇的市場競爭意味著必須不斷投入資源進行創新才能保持競爭力,但同時也面臨資金壓力。
    • 隱私保護法律法規日益嚴格使得收集消費者信息與使用個性化行銷策略變得更加困難。
    • “信息過載”現象使得消費者越來越難以引起注意力,因此即使是高質量內容也可能被忽略。

掌握行銷代操趨勢:引領網路行銷新紀元

在這個數位時代,網路行銷無疑是品牌成功的關鍵。但你知道嗎?掌握最新的行銷代操趨勢,可以讓你的品牌不僅僅是追隨者,而是市場上的領航者。從社群媒體影響力行銷到SEO策略的最佳化,再到利用大資料分析消費者行為,這些都是推動今日網路行銷進步的動力。

現在,每個人都想知道如何可以讓自己的品牌脫穎而出。答案就在於持續學習和適應新興趨勢。例如,了解Google演演算法更新對SEO影響、利用AI技術創造個性化內容或是投入更多資源於影片行銷等等。這聽起來可能有點技術性強,但實際上它們都圍繞著一個核心:更好地理解和服務於我們的目標受眾。

所以呢,在思考如何提升自家網站或社群平台表現時, 不妨從這些趨勢中找尋靈感。記住, 行銷新紀元需要我們不斷探索、學習並適應變化。只要能做到這一點, 任何品牌都有機會在競爭中脫穎而出。

我們在研究許多文章後,彙整重點如下

網路文章觀點與我們總結

  • 內容行銷:透過價值內容吸引和教育目標客戶
  • SEO行銷:提高網站在搜尋引擎中的排名,吸引精準流量
  • 社群行銷:利用社交媒體平台與目標客戶建立互動和關係
  • 網紅行銷:合作網紅發揮其影響力,推廣品牌或產品
  • 制定清晰的目標、針對特定客群、注重細節、確保時效性是提升業績的關鍵因素
  • 透過分析競爭對手策略與創新思考,企業可以在市場上脫穎而出

在這個數位化時代,瞭解並掌握不同的網路行銷策略成了每個想要成功的企業與個人必須做的功課。從內容到SEO,再到社群與合作影響者等方式都是關於如何更有效地接觸到你的目標受眾。但要記得,無論使用哪種策略,最重要的始終是真正理解你的顧客需要什么,以及如何以最合適、最具創新性的方式來滿足這些需求。只有不斷學習並調整策略,才能在快速變化的市場中保持領先。

觀點延伸比較:

行銷策略 目標客群 關鍵作法 預期成效 創新趨勢 內容行銷 廣泛消費者 提供高品質、有價值的內容文章或影片 建立品牌權威,吸引並保持客戶關注度 運用AI技術生成個性化內容 SEO行銷 尋求特定產品/服務的潛在客戶 針對目標關鍵字進行網站和內容優化 提升網站排名,增加曝光率與點擊率 採用語音搜尋優化策略 社群行銷 年輕族群或特定興趣社群 打造互動式、話題性的社交媒體投稿 促進品牌忠誠度,增強用戶參與感 利用數據分析改善用戶互動和個性化推送 網紅行銷 追隨特定網紅的粉絲群 選擇與品牌形象匹配的網紅合作發布推廣信息 利用網紅影響力拓展市場覆蓋範圍 注重長期合作關係以及多平台整合宣傳 市場競爭分析 同業競爭者 洞察競爭對手策略,找出差異化要素 運用大數據分析確定市場缺口和改進方向

獨樹一幟的行銷代操思維:打造令人驚豔的品牌

在這個充斥著無數品牌嘗試爭奪注意力的時代,想要讓自己的品牌脫穎而出,就必須打造一種獨樹一幟的行銷思維。但究竟怎麼做才能令人驚豔呢?創新不僅是跟隨趨勢,而是要敢於突破框架、大膽實驗。比如說,在社群媒體上創造互動式內容來增加使用者參與度,或者運用資料分析來深入了解目標客戶的真正需求並量身定做資訊。

接下來,別忘了情感連結這把鑰匙。人們對於有共鳴、能觸動心靈的品牌記憶更深刻。透過故事化行銷策略,將品牌理念和產品訴求以故事形式包裝呈現,可以有效地拉近與顧客之間的距離。

而且,在今天這個資訊爆炸的年代,單純推廣已不足夠。提供真正有價值、解決問題的內容會更吸引人關注。你是否曾思考過你的品牌能帶給顧客哪些具體改變或幫助?

最後但同等重要的是保持真實性和一致性。在追求卓越和創新的同時,也要確保所有行銷活動都貫徹你品牌核心價值觀。

結合以上元素去思考和執行你的網路行銷策略, 讓你的品牌在眾多競爭者中脫穎而出並留下深刻印象吧!

暢所欲言的行銷代操策略:創造亮眼的網路行銷成果

在提升品牌的過程中,具體而有效的網路行銷策略至關重要。明確定位你的目標受眾是誰,這不僅幫助你製作出對他們有吸引力的內容,更能夠精準地投放廣告。利用資料分析來最佳化你的策略。透過觀察和分析資料,我們可以了解哪些內容最受歡迎、哪些廣告投放效果最佳,從而調整行銷策略以取得更好的成效。

接著是SEO(搜尋引擎最佳化)的重要性。一個良好的SEO策略可以讓你的網站在搜尋結果中排名更高,從而增加曝光率和點選率。別忘了社交媒體平台也是推廣品牌不可或缺的工具。透過定期更新有趣且與品牌相關聯的內容來吸引並保持粉絲關注度。

在建立每一份行銷材料時都要思考如何使之既創意十足又貼近日常生活,這種方式能夠更有效地與目標客戶產生共鳴。比如,在產品介紹或者故事講述中穿插常見問題解答或小知識點滴等元素,既展現了專業性也增加了互動性。

最後但同等重要的是保持耐心和恆心。成功的網路行銷需要時間去培育和最佳化。有時即使做得再好也可能不會立刻看到成果,但只要堅持下去、不斷學習和調整策略,最終必定能看到自己所希望達成的目標。

深入探討行銷代操的YMYL原則:保證資訊的信譽度

在這個網路資訊爆炸的時代,保證資訊的信譽度對於行銷代操來說無疑是至關重要的。畢竟,你是否也曾因為一篇文章、一則評論而對某品牌產生了好感或反感呢?正因如此,深入探討行銷代操的YMYL(Your Money or Your Life)原則變得不可或缺。這個原則強調的是:任何能影響讀者財務穩定性、健康、幸福感或安全感的內容必須極其嚴格地確保資料準確性和來源可靠性。那麼,如何實踐這個原則呢?