These phenomenon jeopardize the condition of the project seriously, and it is the main factor that influences the loss of local water head.
这些现象严重危害管道的工况，并且是影响阀道局部水头损失的主要因素。
Ulteriorly, considering the local head loss in inlet opening and pipes junction plays more important role in the calculative results of water hammer pressure calculation of the short pipeline system.
考虑进口及多管道连接处的局部水头损失对短管道系统水击压强的计算结果影响较大。
Actually, in the tube engineering, the proportion of the loss of local water head in the loss of pipeline water head is big.
在实际管道工程中，阀门阀道的局部水头损失占管路水头损失的比例是相当大的。
And coefficient of local loss-of-head of the water valve is 2.08. This optimum method is suitable for optimization parameter design of other parts in waterway system.
室内样机试验测得的水阀局部水头损失系数为2.08。该方法适用于水路系统其他部件参数的优化设计。
The main purpose of the experimental study on the water fow in the transition region of an aqueduct is to find out the local coefficient of head loss in the region.
渡槽渐变段水力学试验的基本目的，是测定渐变段的局部水头损失系数。
The main purpose of the experimental study on the water fow in the transition region of an aqueduct is to find out the local coefficient of head loss in the region.
渡槽渐变段水力学试验的基本目的，是测定渐变段的局部水头损失系数。
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