排量系數 的英文怎麼說

中文拼音 [bèiliángxìshǔ]
排量系數 英文
coefficient of discharge
  • 排 : 排構詞成分。
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 排量 : aerodynamic volume displacement
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. A variety of methods including the tabular comparison of data, the tabular comparison of similarity coefficient, the nearest neighbor method and the group - average method of hierarchical agglomerative classification were applied to investigate the forest communities in meizi lake area

    森林植被樣地中以喬木層樹種的重要值為指標，採用紙條排隊法、群落相似系數分類法、最近鄰體法、組平均法對梅子湖森林植被樣地進行數量分類。
  2. Brings forward the basic network cell model of symmetrical blast vault and asymmetric blast vault. then studies and analyses airflow in vault of main voltage switchyard hall of xiluodu hydropower station which is far cry and large numbers of airflow conflux, brings forward concept of “ virtual embranchment ” and corresponding basic network cell model, regresses calculate expressions of flux uniformity coefficient and impedance of “ virtual embranchment ” of vault of main voltage switchyard hall of xiluodu hydropower station

    而後又採用cfd數值模擬的方法對溪洛渡水電站主變洞排風拱頂這種多股氣流匯流的長距離通道內的氣流流動進行了分析，提出了「虛擬分支」的概念和相應的網路基元模型，並回歸得到了溪洛渡水電站主變洞排風拱頂各個排風「虛擬分支」風量均勻系數以及阻抗的計算公式。
  3. Derated coefficient of discharge

    額定排量系數
  4. In ranking the indicator system of affecting cultivated land being selected into prime farmland has been built firstly, which is composed of 18 indicators involved in quality, location, policy attribute and administrative intervention of cultivated land. then based on the character of ranking, the idea of combination decision has been brought forward, ranking cultivated land synthetically with three ranking models including a model by similarity to ideal point, fuzzy optimization model and attribute hierarchy model. in three models the weights are based on hierarchy analysis and entropy weights, considering not only subjective partiality but also the intrinsic information of decision objects, which make the ranking results more scientific, reasonable and credible

    在耕地綜合排序中首先建立了耕地入選基本農田的決策指標體系，由耕地質量狀況、區位條件、政策屬性以及行政干預4大決策因素共18個決策指標構成；然後根據排序問題的特點，提出了「組合決策法」的思路，並採用逼近於理想點的排序模型（ topsis ） 、模糊優選模型（ fom ）和屬性層次模型（ ahm ）三種排序方法對耕地進行綜合排序，每種排序模型中均採用基於層次分析法和熵權系數法確定的綜合權重，既考慮決策者的主觀偏好，又充分利用決策對象的固有信息，使排序結果更為科學、合理、可靠。
  5. This paper presented a new type of triswach ( trimaran small waterplane area center hull ) with small length displacement volume ratio which has low powering requirements at high speed

    摘要提出了一種阻力性能優良、船長排水量系數小的高速小水線面三體船型。
  6. In the chapter two we discussed that the server would first use speed - 1 to serve customers when the system entered the busy state from the empty state, but when the server found the number of customers in the system exceeded the thresh - n during serving, after finishing the service of current customer it would use speed - 2 to serve the next customer till there is no customer. by the method of supplementary variable, l - transition and constructing vector markov, we attained the distribution of the queue length, the distribution of wait - time, the distribution of stay - time, the utility and etc. in the last part of this chapter, we discussed the optimal n * for thresh n which minimizing the cost function and we illustrate the cost function behaves for various parameter selections by a numerical study

    在本文第二章討論了當系統從空閑進入忙期時是服務臺以速度1進行服務，但一旦對某顧客服務完畢時如發現系統中的顧客數超過n值時就以速度2服務后續顧客直到系統變空的可修排隊系統，通過構造各種向量馬氏過程和吸收向量馬氏過程，獲得了瞬態、穩態隊長分佈、等待時間分佈、逗留時間分佈、更新周期分佈等一系列排隊指標以及可用度、可靠度等一些可靠性指標，在本章最後又從系統如何更好節省費用角度出發討論了門限n的最優取值問題，並利用mathematic軟體對費用函數進行了數值模擬。
  7. In this paper, the sensibility analysis of the factors affecting the temperature in well bore is relatively systematically made by using a large number of the data calculated with the borehole flow and heat transfer 3 ? d numerical model proposed by the author. the study shows that the thermophysical parameters of the drilling fluid and formation, etc. and the entrance temperature and circulating capacity, etc. of drilling fluid have a greater influence on the temperature in well bore. therefore, accurately mastering the thermophysical parameter values of penetrated formation and drilling fluid in well bore, considering the influence of the temperature and pressure on thermophysical parameters and accurately measuring such parameters as entrance temperature and discharge capacity of drilling fluid, etc. are of utmost importance for accurately simulating the temperature in well bore

    利用由作者提出的井內流動和傳熱的三維數值模型計算所得的大量數據，文章對影響井內溫度的諸多因素進行了較系統的敏感性分析，研究表明：鉆井液和地層等的熱物理參數以及鉆井液的入口溫度、循環排量等對井內溫度有較大影響，因此，準確掌握所鉆地區地層和井內鉆井液的熱物理參數值，考慮溫度壓力對熱物理參數的影響，準確測量鉆井液的入口溫度、排量等參數值，對于井內溫度的準確模擬至關重要。
  8. The system uses the pc and the at89c52 as the control center of the system. the pc optimizes the control parameters as the calculation control unit. the at89c52 receives the various parameters by serial communication with the power measurement system and the fuel consume measurement system and the emission measurement system and the ecu and so on, then sends into pc by sharing the ram with the pc as the communication control unit

    該系統採用pc機和單片機at89c52為上位機，以pc機作為計算控制單元，對發動機控制參數進行優化；單片機作為通訊控制單元，與作為下位機的測功器加載系統、油耗測量系統、排放測量系統以及發動機電控單元ecu等子系統進行串列通訊接收各參數，並通過與pc機共享ram送入pc機。
  9. Then the thermal visualizations of jet impingement cooling with single or double row holes inside semi - enclosed ribbed channel are measured by using infrared camera and the effects of flow and geometry parameters on convective heat coefficients are obtained. the results show that : the impingement cooling effectiveness of ribbed surface is affected greatly by the jet - to - surface spacing, and the best effectiveness is achieved under the jet - to - surface spacing equals to 1. the correlation formulas of impingement heat transfer characteristics to the parameters are finally concluded and in good agree with the experiment data

    最後，對單排、雙排沖擊孔試驗板在半封閉通道展開了流量系數的研究，在變化各種幾何因素及流動因素的情況下由實驗得出了沖擊孔流量系數值，討論並分析了各種因素對流量系數的影響程度，建立了沖擊孔流量系數的準則關系式，與實驗結果對比表明:該準則關系式與實驗實測數據吻合較好，精度較高，有較高的工程應用價值。
  10. The model of variability of submergence depth is established based on the law of volume balance, and the changing trends of parameters like submergence depth etc are analyzed. according to the principle of supply and discharge balance, the method to predict oil yield is presented. subject to different objective functions, the corresponding optimum combinations of suction parameters are analyzed, and the importance of choosing objective function to optimum combination of suction parameters is emphasized

    本文研究了油井流入動態關系，根據井筒內液量平衡原理，建立了沉沒度變化的數學模型，分析了沉沒度等參數變化規律；根據油井供、排平衡原則，得出了抽油泵排量系數相對穩定狀態下產量預測的關系；分析了不同目標函數下，油井抽汲參數的組合效果，指出了目標函數選取對參數合理組合的重要性。
  11. The results derived from comparison experiments indicate that various performances of the diesel engine adopting the best project is better than those of the previous intake manifold. especially at the rating, the volumetric efficiency and power increases by about 5 %, exhaust temperature decreases by 50, 4. 3g / kw. h fuel consumption is reduced, o. srb smoke emission is cut down

    試驗表明：該方案與原機進氣系統方案相比，其各項性能指標均有不同程度的改進：在標定點的充量系數和功率提高了將近5 ，排溫下降了50 [ ] ，燃油消耗率減少了4 . 3 [ g kw
  12. At the same time, when the thickness - diameter ratio was larger than 1, it has little influence on the discharge coefficient for the hole configuration, but when the thickness - diameter ratio was less than 1, the discharge coefficient of the hole with across arrangement is higher than that with sequence arrangement

    同時，在氣膜孔厚徑比大於1時，氣膜孔的排列形式對流量系數的影響不大，當厚徑比小於1時，叉排氣膜孔的流量系數要高於順排氣膜孔的流量系數。
  13. The scope of application for every sort of pump is pointed out

    排量系數是反映有桿抽油泵性能的重要因素。
  14. Coefficient of discharge

    排量系數
  15. Discharge coefficient is the important factor of influencing sucker rod pump performance. the discharge coefficient is calculated, and the main influencing factors are analyzed

    本文對有桿抽油泵的排量系數進行了詳細的計算，系統地分析了影響排量系數的主要因素。
  16. In order to study the influence of dimensional configuration of the film cooling hole on the discharge coefficient, some kinds of film cooling holes with different dimensional configuration were designed

    摘要為了研究火焰筒壁面氣膜冷卻孔幾何結構對流量系數的影響規律，設計了幾種具有不同幾何尺寸和排列結構的氣膜冷卻孔實驗件。
  17. The statistics on the measured data in a oil - field shows the submergence depth and discharge coefficient are very low, some key measures for improving discharge coefficient and sucker rod pump performance are presented ; the applications of discharge coefficient to practice are illustrated with examples

    通過對某具體油田區塊測試數據分析，指出該區塊油井存在沉沒度、排量系數低的現象，提出了提高抽油泵排量系數、改善工作性能的措施。舉例說明了排量系數計算在生產管理中的應用。
  18. Based on analysis of multi - cycle theory ， this thesis offers the concepts of generalized releasing coefficients of steam bleeding and influencing rate on steam releasing and provides their basic principle for application and heat economic index of quantitative analysis

    本文在對供熱機組多重循環理論進行分析的基礎上，提出了「廣義抽汽排汽系數」和「抽汽影響率」的概念，並給出了其應用基本法則和定量分析的熱經濟指標。
  19. Two model tests, each with a test program of 9 systematical arrangement of side - hulls in longitudinal and transverse locations, were performed to quantify the resistance and especially the influence of length displacement ratio and the interference between the main and side hulls

    對這種船型進行了2種主體型線、 9種側體布局的阻力試驗，分析研究了阻力性能，討論了船長排水量系數和側體布局對阻力性能的影響。
  20. The distribution of the mass flow rate, the heat transfer coefficients and the film effectiveness of cylindrical holes was measured. the influence of mainstream reynolds number, blowing ratio and the position of holes on flow rate, the heat transfer coefficients and the film effectiveness was studied greatly

    測量了氣膜孔的流量系數、氣膜孔下游換熱系數和冷卻效率的分佈，重點研究了主流雷諾數、二次流吹風比以及孔排位置對氣膜孔的流量系數、氣膜孔下游的換熱系數和冷卻效率的影響。
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