水头      water head(564) head(1467) head of(140) water-head(32) waterhead(28)   water head     A STUDY OF DIFFERENCE EVOLUTION IMAGE OF WATER HEAD GRADIENT VARIATION AND A PREDICTION METHOD FOR STRONG EARTHQUAKE RISK REGIONS     水头梯度变差值演化图象及强地震危险区预测方法研究 短句来源     Experimental study on aerator type of hydraulic structures with high water head     高水头泄水建筑物掺气坎体型研究 短句来源     Research on Elastic Slab Vibration of Inverted Arch Plunge Pool under High Water Head and Large Discharge     高水头大流量作用下反拱水垫塘弹性单底板块振动规律研究 短句来源     3-D Numerical Simulation on Flood Discharge Tunnel with High Water Head and Free Water Surface     高水头明流泄洪洞三维数值模拟研究 短句来源     (2) The water head of wall pressing and the discharge how a steady relation, fitting through mathematics, the discharge formula of the wall pressing weir flow is Q=0.022085bH~(1.55965).     (2)贴壁水头与流量之间存在着稳定的关系,经过数学拟合,贴壁流的流量公式为Q=0.022085bH~(1.55965)。 短句来源 更多          head     A Study on Configurations of Bottom Outlet with High Head     高水头深泄水孔体型的研究 短句来源     Model study on the head loss coefficient of two-stage flap valves     双节拍门水头损失系数模型试验研究 短句来源     Improvement of Control System for High head Hydraulic Test Stand     高水头水力机械试验台控制系统的改进 短句来源     Numerical Analysis of Utilizable Hydraulic Head for Downstream River Course at Wu Jia Jie Power Station     吴家街电站下游河道可利用水头数值计算分析 短句来源     A STUDY OF DIFFERENCE EVOLUTION IMAGE OF WATER HEAD GRADIENT VARIATION AND A PREDICTION METHOD FOR STRONG EARTHQUAKE RISK REGIONS     水头梯度变差值演化图象及强地震危险区预测方法研究 短句来源 更多          head of     (2) The water head of wall pressing and the discharge how a steady relation, fitting through mathematics, the discharge formula of the wall pressing weir flow is Q=0.022085bH~(1.55965).     (2)贴壁水头与流量之间存在着稳定的关系,经过数学拟合,贴壁流的流量公式为Q=0.022085bH~(1.55965)。 短句来源     in the situation of the same discharge ,the weir over water head of the wall pressing weir flow is lower by 14%~16% on average than that of the free flow .     流量相同的情况下,贴壁流的堰上水头比自由流的堰上水头平均低14%～16%。 短句来源     (4)When the weir over water head of the wall pressing weir flow increases to a certain extent ,the weir flow will take off the wall and form the free flow under the function of mass force ,its critical wall pressing head H_(T L)=4.99cm~5.05cm .     (4)贴壁流的堰上水头增大到一定程度,过堰水流在惯性力的作用下会脱壁形成自由流,其临界贴壁水头H_(贴临)=4.99cm～5.05cm。 短句来源     The maximum flood discharge of spillway is 31318 m3/s with the maximum head of 182m and the flood power of 55860MW,the stilling basin was bulit for energy dissipation at tail end of spillway;     溢洪道最大泄洪流量高达31318m3/s,泄洪最大水头182m,泄洪功率达55860MW,采用了预挖消力塘的消能方案; 短句来源     STUDY ON COEFFICIENT OF LOSS HEAD OF FLOATING HYDRAULIC-OPERATED AUTOMATIC GATE     浮箱式水力自动门水头损失系数试验研究 短句来源 更多          water-head     Study on Hydrodynamic Characteristics of High Water-Head Flat Gate     高水头平板闸门水力特性研究 短句来源     Two-dimensional turbulent-flow numerical modeling in non-pressure tunnel of high water-head reservoir     高水头下水库无压泄水洞的二维紊流数值模拟 短句来源     We are of the opinion that among the various small types of the low water-head power stations or electric power stations, the type with water wheel is most suitable for the present countryside of China.     目前农村低水头小型动力站及水电站可能用的水力机械有贯流式水輪机、立軸式水輪机及水輪三种型式。 其中水輪的突出优点是簡单实用,一般人认为水輪的效率低,因此新建的小型电站和动力站都不再采用水輪。 短句来源     Finite Volume Method is appilied in numerical modeling of the flow in no-pressure tunnel of high water-head reservoir in this paper. The author selects standard k-ε turbulence modeling by weighted poly-turbulence modeling through the comparison of numerical results and model experiment results, there is very good inosculation.     对多种紊流模型的优缺点进行比较后,选择了标准的k-ε紊流模型模拟高水头下水库无压泄水洞水流,计算结果与物理模型试验结果吻合较好。 短句来源     查询“水头”译词为其他词的双语例句 waterhead   查询“水头”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   water head This paper proposes a methodology to locate seismic damage to a water distribution system by monitoring water head online at some nodes in the water distribution system. 例句来源       An artificial neural network-based inverse analysis method is developed to estimate the water head variations at all nodes that are not monitored based on the water head variations at the nodes that are monitored. 例句来源       The vertical location where maximum velocity occurs is located on a lower position as the upstream water head increases and the location almost linearly increases with the distance from the front of the spillway. 例句来源       Soil column experiments were performed in saturated soil under steady-state flow at a specific water head. 例句来源       Based on abundant data, initial formation pressure and other parameters, such as water head were studied. 例句来源       更多             head EGFR is over-expressed in numerous tumors including, those derived from the brain, lung, bladder, head and neck. 例句来源       It is found that the head-on face (in contact with solution) of the films is green while the back face is white. 例句来源       Optimal approximation of head-related transfer function's pole-zero model based on genetic algorithm 例句来源       In the research on spatial hearing and virtual auditory space, it is important to effectively model the head-related transfer functions (HRTFs). 例句来源       In the research on spatial hearing and realization of virtual auditory space, it is important to effectively model the head-related transfer functions (HRTFs) or head-related impulse responses (HRIRs). 例句来源       更多             head of Ultramicrostructure and clinical implications of satellite foci in front of the head of pterygium 例句来源       Model test study for ice force on the bank-head of the lead-navigating bank 例句来源       Mechanics of the formation of a channel by a head of a bending body is considered. 例句来源       Effect of structure of polar head of phospholipids on their fragmentation during γ-irradiation of model membranes 例句来源       The Outflow of a Two-Phase Gas-Liquid Mixture from the Mixing Head of a Gas Generator when Starting a Liquid-Propellant Rocket E 例句来源       更多             其他          ~~             在模型试验实践中,发现满流输水道自由出流时,出口尾段压力分布不循一般规律,顶部发生大片负压。负压问题在大直径输水道中影响工程安全;对低水头大隧洞,它还涉及有效水头的准确计算;此外,管道出口段的水力因素变化规律,迄今仍是管道水力学中的一个空白点。本文便是针对这些问题所作系统试验研究的一个综合报导。试验主要在15公分圆管中进行。试验成果,并在三种不同管径不同材料的圆管中进行校核。试验中取水流傅氏数和出水条件作为主要变量;着重研究了不同出口边界条件对出口断面压力分布和出口段压坡的影响;对有效水头计算方法、管顶负压消除措施,提供了具体建议。文中并对自由出水的出口段压力分布作了初步理论分析,计算结果与实测资料颇称吻合。 文摘来源          ~~             溢流坝上闸孔自由出流问题具有重要的实际意义,但是过去研究得并不充分。所以直到现在, 在水力学和设计规范中,都缺乏正确的系统的说明。可是设计溢流坝时,又不能不计算闸孔的大小和水库水位的高低,因此就只好采用一些不完善的方法,结果当然易于产生错误。由于实际工作的需要,作者从最基本的方面进行了这个问题的研究,结果查明:对通用的流量公式而论,流量系数(μ)是孔口高度5水头的比值(a/H),及闸孔上缘(指:闸门或胸墙)下游末端的切綫与水平面所成的夹角(θ)的函数。业已发现这三个变数间的关系是:在以μ为纵座标,以a/H为横座标的图上,构成了因θ而变的散射綫族,其中,μ与a/H及θ均成反比变化。根据这个关系,作者提出了决定μ的新公式。 文摘来源          We are of the opinion that among the various small types of the low water-head power stations or electric power stations, the type with water wheel is most suitable for the present countryside of China. It is better than any type of water turbines, especially when water-head is less than 2 metres.Here we have analysed the head losses in middle-push water wheel, estimated their magnitudes, derived the similarity law of water wheel and pointed out that the kinetic energy flowing out from water wheel can be re...             目前农村低水头小型动力站及水电站可能用的水力机械有贯流式水輪机、立軸式水輪机及水輪三种型式。其中水輪的突出优点是簡单实用,一般人认为水輪的效率低,因此新建的小型电站和动力站都不再采用水輪。我們认为采取必要的改进措施后,它的效率可以大为提高,特别在微水头大流量的条件下,水輸的效率可能大于其他两种水輪机。因此在目前我国农村中,仍有意义。 水輸的流体动力損失主要是漏水,減小水轮与地面的間隙或采用防漏措施,便可大大減小漏水损失;其次是出口动能损失,采用本文所提出的利用渠道收回动能的办法,可減少这类损失;再其次是进口冲击損失,減小水貭点对于水輪的相对速度,便能減小这类损失;最后是水力摩阻损失,采取这些办法后,它的效率就大为提高。中冲式水輪的效率可高于75％,我們认为这个数字是現实的。 文摘来源   << 更多相关文摘         相关查询: 流速水头 水头枢纽 取水头 水头自动跟踪 承受水头 水头影响 输出水头 水头值 小水头 水头损失 作用水头 离心水头  对查询结果不满意

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