管子阻力 的英文怎麼說

中文拼音 [guǎnzizǔlì]
管子阻力 英文
pipe resistance
  • 管 : Ⅰ名詞1 （管子） pipe; tube 2 （吹奏的樂器） wind musical instrument 3 （形狀似管的電器件） valve;...
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 阻 : 動詞（阻擋; 阻礙） block; hinder; impede; obstruct
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 管子 : [工業] tube; pipe; valve管子安裝 pipe installation; 管子扳手 bulldog wrench; 管子鋼 tube steel; ...
  • 阻力 : 1 （阻礙事物發展的外力） obstruction; resistance 2 [物理學] resistance; drag; drag force; nowel; ...
  1. However, the constriction induced by ne was further enhanced when exposure of the aorta to hypotonic solution, which was inhibited by either nfa or nppb

    在此基礎上，陰離子通道阻斷劑nfa 、 nppb舒血管效應減弱；在低滲環境中血管張力進一步增加，並能被nfa 、 nppb所完全抑制。
  2. Of the currently available coolers for electronic products with a high heat flux, microchannel heat sinks have been proved to be able to provide the best heat transfer performance and are one of the most promising coolers. the manifold microchannel ( mmc ) heat sink has many advantages such as low thermal resistance, compact structure, little amount of coolant, low flow rate, uniform temperature distribution along the flow direction and many others, so it is able to provide the best heat transfer performance : lowering the maxmal temperature and the temperature difference

    在目前高熱通量電子產品冷卻器中，微通道熱沉已被證實是傳熱性能最佳且最具應用潛力的冷卻方式之一，而歧管式微通道熱沉因具有低熱阻、結構緊湊、所需冷卻液量小、沿流動方向溫度分佈均勻等優點則成為減小電子元器件換熱表面最高溫度、降低溫度變化的一種有效方法。
  3. Our nations must demonstrate a global leadership on these critical environmental challenges, perhaps the most dangerous current one and that is climate change. the united states and china are leading producers of greenhouse gases

    不過，我們也必須預防，萬一我們的軍力、武器管制協定及核子嚇阻力量，仍無法阻止一些狂熱國家對美國或其武裝部隊發動飛彈攻擊。
  4. A vital factor in combating violent crime is deterrence and therefore we must maintain a strong and visible police presence notwithstanding the manpower constraints now facing the force

    為更有效地打擊暴力罪行，我們必須加強對不法份子的阻嚇力，因此，盡管資源緊絀，我們仍須保持強大的前線警力。
  5. Based on prandtl ' s momentum transportation, this paper calculates in detail the physical quantities such as eddy viscosities, and ratio of eddy viscosity to motion viscosity, total stresses with respect to relative position in three regions of viscous sub - layer, buffer layer, and main turbulent stream for non - newtonian fluid flowing turbulently in ducts, which according to karman ' s three layer models and measurement of fluid parameters in evaluation apparatus, discusses the influence of polymer drag reduction on flowing properties of non - newton fluid, analyzes quantitatively principle of turbulent reduction phenomenon and condition of increasing reduction rate

    摘要以普蘭德動量傳遞理論為基礎，按照卡門的三層模型，通過室內模擬環道用0號柴油及加入減阻劑在圓管內的流動參數的測定，計算了非牛頓型流體管內湍流邊界層的層流內層、過渡層、湍流中心的渦流粘度，渦流粘度與運動粘度比、總應力隨相對位置的變化等定量參數，探討了高分子減阻劑對非牛頓流體流動特性的影響，對湍流減阻現象的機理與增大減阻率的條件進行了定量分析。
  6. A novel strip - coil - baffle structure used to enhance heat transfer and support the tube bundle for a tube - shell heat exchanger is proposed. the new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger. the numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted. the computational domain consists of two strip - coil sleeved tubes and two bare tubes oppositely placed at each corner of a square. the velocity and temperature fields in such strip - coil - baffled channel are simulated using fluent software. the effects of the strip - coil - baffles on heat transfer enhancement and flow resistance in relation to the reynolds number are analyzed. the results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40 ? to 55 ? in comparison with a bare tube bundle ; meanwhile, higher flow resistance is also accompanied. it is believe that the strip - coil - baffled heat exchanger should have promising applications in many industry fields

    介紹了一種用於強化管殼式換熱器殼側傳熱和支撐管束的螺旋折流片新型結構，該結構是對換熱器管子相間地套上螺旋折流片以產生旋渦流動.研究模型是在正方形布置的4個管子中的2個對角管子套上螺旋折流片后形成的通道，利用fluent軟體對該上述四管通道模型的流場和溫度分佈情況進行了數值模擬;分析了四管通道模型中螺旋折流片對強化傳熱和流動阻力隨雷諾數的變化關系的影響.算例結果顯示該新型結構可比相同尺寸的光管通道中的情形傳熱系數提高約40 ? 55 ? ，同時也將伴隨較高的流動阻力.可以相信螺旋折流片式換熱器將會在許多工業領域有良好的應用前景
  7. Abstract : a novel strip - coil - baffle structure used to enhance heat transfer and support the tube bundle for a tube - shell heat exchanger is proposed. the new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger. the numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted. the computational domain consists of two strip - coil sleeved tubes and two bare tubes oppositely placed at each corner of a square. the velocity and temperature fields in such strip - coil - baffled channel are simulated using fluent software. the effects of the strip - coil - baffles on heat transfer enhancement and flow resistance in relation to the reynolds number are analyzed. the results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40 ? to 55 ? in comparison with a bare tube bundle ; meanwhile, higher flow resistance is also accompanied. it is believe that the strip - coil - baffled heat exchanger should have promising applications in many industry fields

    文摘:介紹了一種用於強化管殼式換熱器殼側傳熱和支撐管束的螺旋折流片新型結構，該結構是對換熱器管子相間地套上螺旋折流片以產生旋渦流動.研究模型是在正方形布置的4個管子中的2個對角管子套上螺旋折流片后形成的通道，利用fluent軟體對該上述四管通道模型的流場和溫度分佈情況進行了數值模擬;分析了四管通道模型中螺旋折流片對強化傳熱和流動阻力隨雷諾數的變化關系的影響.算例結果顯示該新型結構可比相同尺寸的光管通道中的情形傳熱系數提高約40 ? 55 ? ，同時也將伴隨較高的流動阻力.可以相信螺旋折流片式換熱器將會在許多工業領域有良好的應用前景
  8. Taking some tubular air pre - heater used in one boiler whose capacity is 130 t / h as an example, new blue print with inner trachea is completed by means of computer program. several key design variables may be changed, such as diameter of pipe and velocity of flow of gas. these cases have been considered, and their results have also been compared with each other

    比較了幾個重要的設計變量，如外管徑、煙氣流速等參數變化時，總傳熱系數和空預器本體管子總重量，阻力損失以及最低管壁溫度等幾個重要設計結果的變化趨勢，對內螺紋管空氣預熱器的設計具有借鑒意義；其間還分析了內螺紋管與光管在設計時的不同之處；最後，初步分析了內螺紋管的優化設計問題，提出了一些建議。
  9. Secondly, combining theory with positive study method, this thesis analyzes different stages of the r & d process and the 4ps ' of the marketing mix of trs e - government system deeply. the reasons for the lower competitiveness and causes is found out regarding r & d, products, pricing, channel and promotion, etc. management of trs mainly focuses on technology and lack of studies on customer needs, as well as unawareness of modern marketing which result in separating r & d from marketing, so the technology advantages of trs could not turn into marketing advantages efficiently.

    然後，運用理論和實證相結合的方法，從產品開發和營銷組合的各個環節，對導致trs電子政務系統競爭力不足的原因進行了深入細致的分析，指出trs公司在開發、產品、價格、渠道、促銷等方面存在的問題主要表現在：公司缺乏現代市場營銷觀念，在實際經營管理中過多專注于技術而忽視對客戶需求和市場營銷的研究，造成產品與市場脫節，使先進的技術優勢無法有效轉化成產品的市場優勢，阻礙產品市場競爭力的提高。
  10. In the last part, the situation of the application of ec is outlined, and the facts that impeded the development of ec are presented : the imbalance of supply and demand with regard to the infrastructure of network, the lackey of confidence of consumer and firms on ec because of the lackey of credit in economy life, and the difficulties of how to adapt to and protect the new product style of ec by state legal system. we pointed out that, several aspects, such as fiscal tax revenue, law and enactments, the safety of information, admission of market, the perspectives of information, and technolocrats, will persistently impeded the development of ec. in china, the application of ec should be dominated by firms and conducted by government, which should as soon as possible enact the relative law regarding to taxation, electronic paying, digital signature, certification authority, intellectual property on web, etc. the national physical distribution system, the financial monitory system, the system of credit of firms as well as consumers should be completed

    在最後一個部分，文章簡述了我國電子商務應用的現狀，用博弈論方法分析了制約我國電子商務應用發展的幾個主要原因:網路基礎設施的供需失衡、經濟生活中的信用意識缺乏導致的消費者和企業對電子商務應用中的普遍的不信任及國家法律制度如何適應和保護電子商務這種新的生產方式等，並指出，財政稅收、法律法規、信息安全、市場準入、信息觀念、技術人才等幾個方面的問題將是長期阻礙電子商務發展的因素，電子商務在我國的應用要走企業為主體、政府引導的路子，政府應盡快制定有關稅收、電子支付、電子簽名、身份認證、網上知識產權等方面的法律法規，建立覆蓋全國的現代化物流配送體系，健全和完善金融監管體系，特別是企業信用體系和消費者信用體系的建設，大力推進企業信息化建設，創造發展環境，完善保障機制，加快人才培養。
  11. Structure sizes of superheater tubes and inside resistance coefficients as well as imbalance thermal loads will result in thermal deviation

    過熱器管子結構尺寸、內部阻力系數及熱負荷不均勻，將會產生熱偏差。
  12. Finally, the paper analyzes transmission congestion to the line attain over a long period of time what degree should consider an extension or build a new line to eliminate congestion, from opportunity cost angle. the paper gives a presentation on the challenge that transmission network planning faces and its basic way of thinking in power market environment. the paper also proposed a methodology for transmission network planning based on reformative congestion sensitivity indices

    文章最後，從機會成本角度分析了長期阻塞線路的阻塞達到何種程度時該考慮擴建或新建線路用於消除阻塞，簡要介紹了電力市場環境下電網規劃面臨的挑戰及其基本思路，並提出了改進的基於阻塞靈敏度因子的電網規劃方法，發展和豐富了電力市場環境下電網的輸電阻塞管理研究。
  13. In the domestic factories of twt manufacture, the data of dispersion and interaction impedance are usually obtained by simulation. although the measurement of beam - wave interaction can get the data, which including large and expensive equipments. but it can not find the blemish of sws as early because it must wait until the finishing of whole manufacture

    目前，國內行波管生產科研單位基本都是通過軟體計算得到慢波結構的色散和耦合阻抗冷參量，或者待整支管子裝配完成後，通過熱測來估計出慢波結構的色散和耦合阻抗，這樣做不但測量不準確，而且也不能及時發現慢波結構的缺陷，浪費了大量人力、財力。
  14. Despite previous concerns that children do not benefit from resistance exercise or that the risk of injury is too high, personal trainers, exercise scientists, and medical professionals now agree that strength training is a safe and effective method of exercise for children if the programs are appropriately designed and supervised by professionals

    盡管有些人認為抗阻力量訓練對兒童沒有益處並且承受傷風險太高，現今的私人教練、運動專家和醫療人員卻同意力量訓練如果由專家設計和適當地監督下，對孩子來說是安全和有效的訓練方法。
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