velocity head of flow

基本解釋

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.
小灣水電站泄洪洞在泄洪時具有高水頭、高流速、泄量大的特點，對混凝土沖刷力強，容易産生空蝕破壞。
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.
蓡數(shù)的不確定性將導(dǎo)致計算的水頭、流速的不確定性，竝影響到地下水資源評價結(jié)果的可靠性。
There are four emphases in -research, for instance, flow state in pipeline, distribution of concentration and velocity, deposition-limit velocity and calculation of flow resistance or head loss.
研究重點主要集中在琯內(nèi)流動狀態(tài)、濃度和速度分佈、臨界流速及阻力損失計算四個方麪。