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闸门段
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  “闸门段”译为未确定词的双语例句
     Ussually the total head loss coefficient of culvert systems consists of three parts,namely,the valve loss coefficient,the local culvert loss coefficient(including mainly the manifold loss coefficient),and the fric- tional loss coefficient.
     通常输水系统总阻力系数主要由廊道闸门段损失,廊道局部损失(其主要部份为出水孔段损失)以及廊道沿程摩阻损失等三部份组成。
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  相似匹配句对
     Discussion on gate design in the Beijing to Shijiazhuang segment of mid-route of South-North water transfer
     南水北调中线京石闸门设计探讨
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     Hydraulic Test Study on Resistance Coefficient of Emergency Gate at Inclined Penstock Intake
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     2. kick-off section;
     2,造斜
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     4.The facial segment.
     4.面
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     Optimal Design of Steel Gate
     闸门的优化设计
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This paper describes the hydraulic model scale effects on the filling and emptying culvert systems of navigation lock. Ussually the total head loss coefficient of culvert systems consists of three parts,namely,the valve loss coefficient,the local culvert loss coefficient(including mainly the manifold loss coefficient),and the fric- tional loss coefficient. Several model tests and prototype observations show that the two former loss coefficients are not related to the Reynolds number of culvert when Re≥5×10~4,that...

This paper describes the hydraulic model scale effects on the filling and emptying culvert systems of navigation lock. Ussually the total head loss coefficient of culvert systems consists of three parts,namely,the valve loss coefficient,the local culvert loss coefficient(including mainly the manifold loss coefficient),and the fric- tional loss coefficient. Several model tests and prototype observations show that the two former loss coefficients are not related to the Reynolds number of culvert when Re≥5×10~4,that is to say,they are not relevant with the model scale. The difference between model and prototype frictional loss coefficients is the main cause leading to the difference between model and prototype discharge coefficients,that is the reason why the prototype discharge coefficient is more larger than the model discharge coeffcient when valve opening η≥0.8. To determine more exactly the prototype discharge coefficient and other hydraulic characteristics,relevant roughness correct calculation is necessary especially when the model scale is relatively small.

本文叙述了通航船闸输水系统的水工模型缩尺影响。通常输水系统总阻力系数主要由廊道闸门段损失,廊道局部损失(其主要部份为出水孔段损失)以及廊道沿程摩阻损失等三部份组成。模型试验及相应的原型观测表明,前两种损失在廊道水流雷诺数 Re≥5×10~4以后,即和雷诺数无关,亦即与模型缩尺无关,而模型与原型之间沿程摩阻损失系数的差异是导致原模流量系数不相同的主要原因,这也就是为甚么在输水阀门开度η≥0.8以后原型流量系数大于模型流量系数的原因。为了更准确地确定原型流量系数及其他输水水力特征值,需要进行相应的糙率校正计算,特别是当模型比尺较小时。

 
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