有效尾流 的英文怎麼說
中文拼音 [yǒuxiàowěiliú]
有效尾流
英文
effective wake-
Drafting can reduce lap times during a race and may have a minimal fuel - saving benefit
尾流可以提高圈速,也許還有一點點節省燃油的功效。Braking is not as effective when travelling in another car ' s slipstream
處在前車的尾流中時,剎車不再那麼有效。The results indicated that the generation of trailing - vortex of downstream adjacent vanes could be restrained effectively by upstream wake when the passing frequency and the amplitude of wake defect satisfy some conditions, associated with a significant enhancement of time - averaged aerodynamic performances : loss coefficient reducing 40. 2 % and the ratio of loading coefficient and loss coefficient increasing 93 %
研究表明:滿足一定通過頻率和虧損幅值條件的尾跡能夠有效抑制下游相鄰葉排尾緣渦的生成,達到控制或是推遲附面層非定常分離的目的,從而使得流場時均性能大幅度的提高,損失系數降低了40 . 2 % ,功損比增加93 % 。Abstract : it has been established that titanium exists in jinduicheng molybdenum deposit in rutile type by test for all kinds of ores. its grade is about 1 %. there isn ' t concentration in products. the particle size is fine, and the distribution isn ' t evenly. it has a definite economic benefit if it recoveried from tailings
文摘:通過對金堆城鉬礦床中各種類型礦石的系統測試,查明了鈦在該礦床中主要以單礦物金紅石的形式存在於花崗斑巖各蝕變帶的鉬礦礦石中,品位約為1 % ,產品中沒有富集,基本隨尾礦流失,粒度細,分佈不均,從尾礦中進行綜合回收,具有一定的經濟效益。Based on experimental result of energy dissipation and scour protection for downstream of spillway at yu jian kou power station, this paper discusses the flow characteristics, aerated characteristics of flaring gate pier for low dam pivot, the influence on pressure of dam surface and the result of energy dissipation for flaring gate pier. it is put forward to be an available method to solve the problems of energy dissipation and scour protection for depth of covering strata, poor geologic condition and weakness of resistance to scour capability under reasonable use of flaring gate piers and auxiliary dissipaters. thus, a new method is obtained for release of floodwater and energy dissipation of low dam pivot which are provided with low water head, great unit discharge and low froud coefficient. it may be used for reference for design and test workers
結合魚劍口電站壩下消能防沖試驗研究成果,對低壩樞紐寬尾墩的水流特點、摻氣特性、寬尾墩對大壩泄流能力和壩面壓力的影響以及寬尾墩的消能效果等問題進行了初步探討,提出了合理地使用寬尾墩結合輔助消能設施可有效地解決壩下覆蓋層深,地質條件差,抗沖能力弱的低壩樞紐的消能防沖問題,從而為具有低水頭,大單寬流量,低佛氏數特點的低壩樞紐泄洪消能開辟了一條新途徑,可供有關低壩樞紐設計與試驗工作者借鑒與參考Then, this paper introduce a new method of measuring the risk ? ? cohesive value at risk ( cvar ), which is more logical than the var on optimizing the portfolio according to the characteristic of the stock bargaining market of our country, it constructs a corresponding index of liquidity risk of the stock assert of the open - end fund, and by constructing a optimized model in cvar, the liquidity risk of stock assert of the open - end fund is efficiently controlled
接著,本文引入了一種全新測量風險的方法cvar方法,並且根據我國交易市場的特點構造了相應的開放式基金股票組合的流動性風險指標,通過構造cvar調整的投資組合風險優化模型有效的控制了股票資產組合的流動性風險。本文的研究表明: ( 1 )開放式基金股票組合的流動性風險具有明顯的尾部風險。The integrated system of smelting reduction ironmaking - gasolinesynthesis - electric - ity generation, in which the coal gas produced inthe ironmaking module is first cleaned and then used as the fuel for theelectricity generation module or raw material of the gasoline synthesismodule, can resolve the problem of utilization of tail gas in thesmelting reduction ironmaking and the large investment of gasificationin the integrated gasification combined cycle and gasoline synthesis. taking efficiency, scale and product structure into consideration, the processes of the two - stage smelting reduction ironmaking - combined cycleelectricity generation with coal gas, the two - stage smeltingreduction ironmaking - steam cycle electricity generation with coal gas, the one - stage smelting reduction ironmaking - combined cycleelectricity generation with coal gas, and the one - stagesmelting reduction ironmaking - gasoline synthesis with coal gas - steamcycle electricity generation with tail gas are techno - economicallyfeasible and have the promise of being industrialized
將熔態還原煉鐵產生的煤氣在凈化后發電或經改質后合成汽油的集成系統可以解決熔態還原煉鐵的尾氣利用問題及聯合循環發電和煤基汽油合成造氣投資成本高的問題.從效率、規模和產品結構各方面考慮,過程模擬結果顯示:二段法熔態還原煉鐵-煤氣聯合循環發電、二段法熔態還原煉鐵-煤氣蒸汽發電、一段法熔態還原煉鐵-煤氣聯合循環發電、一段法熔態還原煉鐵-煤氣合成汽油-尾氣蒸汽發電流程,有實現產業化的可能Sound is a multidimensional medium, the fundamental dimensions of sound are pitch, timbre, loudness, duration and direction, further more, sound has multiple effects, these effects roughly are cocktail party effect, streaming, echo and reverb
聲音是一種多維度媒體,主要有音調、音色、響度、持續時間和方向等維度特徵;聲音又是一種多效應媒體,主要有雞尾酒會效應、流效應和回聲、反射等效應特徵。The axial - flow turbine generator set is suitable for low head from 2m to 70. its feature is that the water flow passes through the runner axially. the axialflow turbine generator set can be classified into two forms according to the runner construction : one is fixed blades propeller for small variation of head and power, the other is movable blades kaplan for large variation of head and power
貫流式水輪發電機組是低水頭大流量電站的較好機型,一般適用於水頭2 ~ 15米,其特點是水流從進水口到尾水出口都是軸向的,流道基本上成直線,因而貫流式水輪發電機組具有水流特性好,效率較高等特點。A parameter has been defined to account for both the heat transfer enhancement and pressure loss caused by different shapes and configuration of pin fin arrays and the optimization analysis shows that cube - shaped pin - fin arrays can be viable alternatives for pedestal cooling in a blade trailing edge
本文提出了一個強化換熱有效性系數來綜合考慮擾流柱換熱和壓力損失的效果,並用它對各種擾流柱進行了優化分析,優化結果表明方形擾流柱排在渦輪葉片尾緣區冷卻結構設計中是優先考慮的一種結構型式。Abstract : based onmethods of foreign countries of using wi nd tunnel test and numerical flow simulation, optimum nose a nd tail shapes ofhigh - speed trains are studied to achieve optimum aerodynamic performance so as to efficiently reduce the influence of theaerodynamic phenome na on the train operation and the environment. research results of foreign countr ies are introduced
文摘:針對國外利用以風洞模型模擬試驗和以流場數值模擬計算為主的方法來尋求高速列車最佳的頭尾部形狀,使列車的綜合氣動性能最佳,從而有效地降低空氣動力學現象對列車運行和周圍環境的影響進行了探討,介紹了國外在此方面取得的主要成果。Engineers are working on ways to detect hazardous wake vortices so pilots can avoid them or to design aircraft that leave safer skies behind them
工程師正在研究,想找出有效的點子,偵測危險的機尾渦流,或設計不會危及後方空域的安全飛機。Abstract : based on experimental result of energy dissipation and scour protection for downstream of spillway at yu jian kou power station, this paper discusses the flow characteristics, aerated characteristics of flaring gate pier for low dam pivot, the influence on pressure of dam surface and the result of energy dissipation for flaring gate pier. it is put forward to be an available method to solve the problems of energy dissipation and scour protection for depth of covering strata, poor geologic condition and weakness of resistance to scour capability under reasonable use of flaring gate piers and auxiliary dissipaters. thus, a new method is obtained for release of floodwater and energy dissipation of low dam pivot which are provided with low water head, great unit discharge and low froud coefficient. it may be used for reference for design and test workers
文摘:結合魚劍口電站壩下消能防沖試驗研究成果,對低壩樞紐寬尾墩的水流特點、摻氣特性、寬尾墩對大壩泄流能力和壩面壓力的影響以及寬尾墩的消能效果等問題進行了初步探討,提出了合理地使用寬尾墩結合輔助消能設施可有效地解決壩下覆蓋層深,地質條件差,抗沖能力弱的低壩樞紐的消能防沖問題,從而為具有低水頭,大單寬流量,低佛氏數特點的低壩樞紐泄洪消能開辟了一條新途徑,可供有關低壩樞紐設計與試驗工作者借鑒與參考分享友人