比轉數 的英文怎麼說

中文拼音 [bǐzhuǎnshǔ]
比轉數 英文
specific speed
  • 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...
  • 轉 : 轉構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  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. Compared with primary second sampling a / d converter, it realizes digital feedback by digital circuit and does n ' t adopt high accuracy d / a converter with complex technology and high price. it has many excellent qualities, such as high - integration, high - accuracy, widely used, low - price. it can be widely used in test and measure system, scientific instrument, iatric instrument, automatic test system etc. so popularizing this new type a / d converter has very significant meaning

    與原有的兩次采樣a / d轉換器相比，用數字電路實現數字反饋可不用技術復雜、價格昂貴的高準確度d / a轉換器，具有集成度高、準確度高、適用性強、價格低等優點，可廣泛應用於測量測試系統、科學儀器、醫療儀器、稱重儀器、自動測試系統等。
  3. Experimental research on low specific speed roto - jet pump

    低比轉數旋噴泵的試驗研究
  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. The following results are obtained : ( 1 ) the flow in rotating helical pipes are affected by dean number, curvature, torsion ( or germano number ), the ratio of the coriolis force to the centrifugal force f number ( or rossby number ) and the geometry of the cross section

    研究結果表明： （ 1 ）旋轉螺旋管道流動特性受dean數、曲率、撓率（或germano數） 、科氏力與離心力之比f數（或rossby數）以及截面的形狀五種因素的影響。
  6. This paper elaborates the parameters selection of the 700mw turbine for laxiwa power station located upstream yellow river, which is coming into construction soon. through statistical calculation of specific speed for turbines with large capacity, high operating head in domestic and oversea power station, utilizing turbine homologous theory. adopting regression statistic calculation method, it has got specific speed statistic equation., the demonstration of primary parameters selection, and the primary target parameters suitable for laxiwa power station

    本文針對黃河上游即將開工建設的拉西瓦水電站700mw水輪機的參數選擇進行了研究，通過對國內外的大容量、高水頭水輪機的比轉速統計計算，利用水輪機的相似理論，採用回歸統計計算方法，統計出了比轉速統計方程，並進行了水輪機主要參數選擇論證，提出了適合拉西瓦水電站水輪機的主要目標參數。
  7. 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。
  8. Test study of dynamic hydrocyclone s separation performance

    分流比及轉數對分離性能的影響
  9. 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。
  10. Bp23 celb genes, b. pwnilus endoglucanase and b. polymyxa beta - 1, 4 - endoglucanase " genes, respectively. it was recognized as a new gene encoding for endoglucanase of b. mega terium. the recombinant plasmid tvchi ( pmd18 ~ t inserted with chitinase encoding gene from aplls ) and e. coli - bacillus shuttle vector physooplk were digested by ecori and sail completely, and the chitinase gene was ligated with shuttle vector, and the recombinant vector was used to transform b. megaterium ap25 competent cell

    平板拮抗實驗同野生菌株相比，轉化子對麥長蠕抱菌的抑制作用最明顯，抑制百分數最高可達33 . 3 % ，而apll3和ap25分別是23 . 1 %和25 . 6 % ，同時轉化子對小麥紋枯病菌、棉花立枯病菌、棉花枯萎病菌和小麥的全蝕病菌也具有較為明顯的抑制作用。
  11. 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。
  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. A series of tests on centrifugal oil pumps with different specific speeds were done under different conditions of liquid viscosities and pump rotary speeds

    摘要用比轉速為66 ， 90 ， 105的離心泵在不同粘度、不同轉速下進行了一系列試驗，提出了一種新的油泵液體粘度換算方法，該方法考慮了轉速對換算系數的影響。
  19. 3. by using comparative labor productivity and the duality contrast coefficient, this paper measures the strength and transformation conditions of chongqing ' s dual economy structure, and reveals that the transformation of chongqing ' s dual economy structure is deviated from the general law of economic development : along with economics increases, chongqing ' s dual economy structure submit to a continuously reinforced tendency

    3 、運用比較勞動生產率、二元對比系數等指標對重慶二元經濟結構的強度及轉換狀況進行了總體度量，發現重慶二元經濟結構的轉換與經濟發展的一般規律相背離：即隨著經濟的增長，二元經濟結構卻呈不斷強化的趨勢。
  20. Machine tools ; on - load speeds for machine tools ; nominal values, limiting values, transmission ratios

    機床.機床的負荷轉數.標稱值極限值傳動比
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