即为 ，用来描述单位重量液体所具有的动能
小湾水电站泄洪洞在泄洪时具有高水头、高流速、泄量大的特点，对混凝土冲刷力强，容易产生空蚀破坏。
As the high head, high velocity and large flow of flood discharge, the concrete of spillway tunnel in Xiaowan Hydropower Station is easy to be damaged by cavitation.
参数的不确定性将导致计算的水头、流速的不确定性，并影响到地下水资源评价结果的可靠性。
The uncertainty of the parameters may induce uncertainty calculation of water head and velocity of flow, and influence the reliability of the results of groundwater resources appraising.
条件模拟方法计算出的水头、流速和水动力弥散系数的标准差要小于非条件模拟的结果；
The variability of the pressure head, velocity and hydrodynamic dispersion coefficient obtained from conditional simulation are smaller than those obtained from unconditional simulation.
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