轉數比 的英文怎麼說

中文拼音 [zhuǎnshǔbǐ]
轉數比 英文
ratio of revolutions
  • 轉 : 轉構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  1. “ we have looked to gain performance by increasing the peak revs, and improving areas like cylinder filling and combustion, ” explained denis chevrier, renault ' s head of trackside engine operations. “ in qualifying trim, we expect a gain of several tenths of a second and the final dyno tests before the grand prix will allow us to determine exactly how much additional performance is available during the race

    「我們看上去已經通過增加最大轉數取得了成績，並改善了像汽缸填塞和燃燒這樣的區域」雷諾賽道引擎運作負責人丹尼斯-謝維瑞爾解釋說， 「在排位賽中，我們期待能獲得零點幾秒的時間，大獎賽前的最後測試會允許我們最終決定可以在正式比賽中有多少的附加表現。 」
  2. Experimental research on low specific speed roto - jet pump

    低比轉數旋噴泵的試驗研究
  3. In this paper, a new technique is proposed for rotation, scaling and translation invariant image watermarking based on log - polar mappings and phase - only filtering

    該文的研究工作和貢獻是：基於對數極坐標仿射lpm和相位濾波器pof ，提出了一種不受旋轉按比例縮放和位移rst影響的數字圖像水印技術。
  4. The roto - jet pump is a new kind of very low specific speed pump which is developed in recent years. it is always used in carbin black, food production, chemical industry and deep well mining system to supply the steady outflow with low flux and high pressure

    旋轉噴射泵是近些年才發展起來的一種極低比轉數泵，主要用在碳黑、食品、化工以及深井采礦系統中用以提供小流量高水頭的穩定出流。
  5. Launch of advanced range, the new two - cylinder belt - driven electric compressors : more air output, longer life span and lower rpm

    與舊款空壓機相比，它有更高的排氣量，更長的使用壽命和更低的轉數。
  6. Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed

    本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上，以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型，通過攝動方法和有限體積法，首次對各種截面（圓截面、橢圓截面、環形截面、矩形截面）旋轉曲線管道內充分發展流動的流動結構和傳熱特性（包括耦合對流傳熱特性）以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析，詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響，獲得了若干創新性成果。
  7. Test study of dynamic hydrocyclone s separation performance

    分流比及轉數對分離性能的影響
  8. Comparing tow methods of efficency pre - estimation, it finds out the new method fit for super - low specific - speed pump. acoording to the study and comparison on efficency and reliability, the thesis points out merits and faults of the 5 types of impeller, and draws a conclusion that the complex impeller and partly blocked - flow - passage impeller are fit for the impellers of super - low specific - speed centrifugal pump

    比較了泵效率預估的方法，提出了適合於極低比轉數泵效率預估的新方法，並對其性能要求的效率和可靠性兩方面進行了研究比較，指出了五種形式葉輪各自的優缺點，得到結論：復合葉輪和部分堵塞流道的一般葉輪適合作極低比轉數泵葉輪。
  9. Making an engine run faster than 19000 rpm is pointless

    讓一臺引擎每分鐘的轉數比19000轉還多是沒有意義的。
  10. And finally, the complement operator inverts the value of each bit of the operand : if the operand bit is 1 the result is 0 and if the operand bit is 0 the result is 1

    最後，上面的互補運算符（按位異或）對兩個操作數的每個比特位進行值的轉化:操作數比特位是1的（另一個為0 ）運算后的（比特位）結果為1 ，比特位為0 （而另一個操作數為1的） ，計算后結果為1
  11. The results indicated that the screening rate was positively correlated with the legislation of the kindergartens ; the abnormal rate was around 4 - 5 % each year and was no different in different countie, but the referral rate was low ; the use of medical resources after referral was high as 90 % ; the accuracy of screening was around 50 % each year as was the trend of increased accuracy ; the total cost of health screening was around $ 4200 million between 1997 to 1999 but only $ 1800 million in 1995 due to lower costs per case and $ 2600 million in 2000 due to fewer cases screened

    研究發現兒童接受篩檢率與立案率有顯著的正相關；異常個案管理轉介人數，各縣市之間差距不大，歷年比率在4 % ~ 5 %之間，轉介比率偏低；經轉介之後的就醫百分比，歷年均在九成以上；篩檢正確率，歷年均在五成以上，且有逐年升高之趨勢；健康篩檢經費， 86至88年度健康篩檢經費均在四千二百萬以上， 85年因每人次檢查費用較低，健康篩檢經費將近一千八百萬， 89年度則因篩檢人數較少，總費用約?二千六百萬。
  12. The increasing - flow design method is presented on superlow - specific - speed high - speed centrifugal pump in this paper

    闡述了超低比轉數高速復合葉輪離心泵的加大流量設計方法，並給出了兩個設計實例。
  13. Super - low specific - speed centrifugal pump is a part of centrifugal pumps, which is widely used in aerospace and petrochemical industries

    極低比轉數離心泵（ ns < 30 ）是離心泵的一部分，其在宇航事業和石化工業等領域應用廣泛。
  14. According to the distribution of pressure and velocity on the 5 types of impeller, it analyses and discribes the feature of internal flow in super - low specific - speed pump impeller

    通過對五種葉輪內流動的模擬比較，描述了極低比轉數葉輪內流動的特點。
  15. A new type of very low specific speed pump ? roto - jet pump is presented for low flowrate and high head transportation, which is introduced at the end of the thesis

    論文最後主要研究了一種隸屬于極低比轉數離心泵范疇的新型泵? ?旋噴泵，它是一種新型的石油化工用泵，具有流量小、揚程高、流量揚程曲線平緩的特點。
  16. This thesis also describes the numerical simulation of three - dimensional turbulent flow in super - low specific - speed impeller, points out the turbulence model and numerical solution for it, and gives the writer ' s view of the grid - generation

    論文的另一部分工作是數值模擬極低比轉數泵葉輪內部流動，提出了適合的湍流模型和數值解法，並對網格的劃分提出了自己的看法。
  17. In present thesis, the actual design theories and methods for super - low specific - speed pump are introduced first, including " the increased flowrate design method ", " the method of anti - hump on h ~ q characteristic curve ", " non - overload design method ", " the design method of complex impeller " and so on. according to these methods, 5 types of impeller have been designed

    論文首先對極低比轉數離心泵的現行設計理論和設計方法作了介紹，包括加大流量設計法、減小或消除揚程曲線駝峰的途徑、無過載設計及復合葉輪設計法等，並按照這些方法設計了五種葉輪。
  18. ( 5 ) as torsion is increased, the anticlockwise secondary vortexes and the negative area of the stream function increase ; the axial velocity moves anticlockwise ( annular pipe ) or clockwise ( circular pipe ) ; the friction factor ratio finally reaches the value about 1

    （ 5 ）增大撓率，逆時針方向旋轉的一二次渦和流函數的負值區域增大，軸向速度最大值的位置按逆時針（環形截面）或順時針（圓截面）方向旋轉，摩擦系數比最終趨向於1 。
  19. ( 5 ) in analyzing the cases of information asymmetry issue of listed companies, the dissertation simplifies the theory raised by foster, the american accountant and economist, boly, brown, etc, explaining the influence on the price fluctuation caused by the ration of share distribution, share transfers, etc. the dissertation holds the opinion that the basic risky coefficient and systematic coefficient in sharp model can be easily calculated by comparing the practical interest rate of one particular stock to the interest rate of the whole stock market during the same period

    （ 5 ）本文在對上市公司信息不對稱問題的實證分析中，簡化了美國會計師、經濟學家福斯特、威克利、鮑利、布朗等人對上市公司派、送、轉股比例對股票市場的價格變動研究的市場模型，認為通過研究某支股票在某個具體時間內的實際收益率和相同的時間內股票市場的實際收益率，就可以方便地定出夏普模型中的基礎性風險系數和系統性風險系數。
  20. For solving the problem of insufficient temperature drop, adopts some improvement measures including relocating filling materials, adjusting the rotational speed rate of the fans, increasing the fan blade quantity and using wider fan blades

    摘要針對冷卻塔降溫效果較差問題，採取了重新碼放填料、調整風機轉速比、增加風機葉片數量、加寬葉片直徑等改進措施。
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