velocity head

基本解釋

Strong radar echoes and positive-negative velocity and head wind area are indicative to the heavy rainfall event.
強(qiáng)雷達(dá)回波和正負(fù)速度對、逆風(fēng)區(qū)等特征對強(qiáng)降水具有指示意義。
The liquor is pumped through a large nozzle and the velocity head is utilized to draw the gases to be absorbed into the liquid .
液體用泵送經(jīng)一只大的噴頭，利用速度變化產(chǎn)生的壓差將待吸收氣體帶到液體中。
Described are the influence of velocity head on the actual flows with same level and the artesian flows for different liquid levels.
指出速度水頭對同一液面高度的實(shí)際流量的影響及不同液面高度下的自流發(fā)油流量。

the velocity of a fluid expressed in terms of the head or static pressure required to produce that velocity. It equals /2 where is the density of the fluid and is the velocity. In hydrology the density of water can be written 1/G where G is the gravitational constant