地下水动力学 2006-4-4 吉林大学 肖长来 7 速度水头(velocity head):在含水层中的某点水所具有的动能转变为势能时所达到的高 度,量纲为L,即 g u h v 2 2 = ,式中u 为地下水在该点流动的速度;g...
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velocity head tachometer 液压转速计
mine velocity head [矿业] 矿井通风速度压头
lost velocity head 损失速度头
velocity head coefficient 流速水头系数
loss of velocity head 速度头损失
inlet velocity head 入口速度压头 ; 进口速度头
velocity head flowmeter [仪] 速头流量计
N the velocity of a fluid expressed in terms of the head or static pressure required to produce that velocity. It equals ρν/2 where ρ is the density of the fluid and ν is the velocity. In hydrology the density of water can be written 1/G where G is the gravitational constant 动压头
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。
The greater the amplitude change of head wave of transverse velocity is, the severer the damage is, the later the arriving time of the first wave hollow and the longer the damaged element will be.
当脉冲作用点在受损单元的起始位置时,脉冲作用点横向速度波首波波幅变化越大,损伤越大,脉冲作用点横向速度波的第一个波谷到达时间越晚,损伤单元越长。
Healthy individuals demonstrated a more periodic gait with regular and higher velocity foot kicks and faster torso and head movement than impaired individuals when completing a cognitive task.
完成认知测验时,与受损害个体相比,正常个体步态呈规则周期性、抬脚速度更快,并且头部和躯体的运动也更迅速。
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