指出速度水头对同一液面高度的实际流量的影响及不同液面高度下的自流发油流量。
Described are the influence of velocity head on the actual flows with same level and the artesian flows for different liquid levels.
对于速度边界层提出了相似性解的解析结果，给出了速度分布、边界层厚度、摩擦阻力和水头损失的解析计算表达式。
Calculation formula of velocity distribution, boundary layer thickness, friction force and loss of water head are given out, in accordance with the result from theory analysis of similitude solution.
在水头、负荷变化范围较大的蓄能电站中，为改善机组运行工况，可以采用速度可调的发电电动机。
For pumping storage stations with wide rangeability of head and discharge, a speed-adjustable motor-generators can be used for improving operation condition.
临界速度和水头损失坡降是浆体输送管道的重要设计参数。
The critical velocity and the head loss gradient of slurry pipelines are important design parameters...
临界速度和水头损失坡降是浆体输送管道的重要设计参数。
The critical velocity and the head loss gradient of slurry pipelines are important design parameters...
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