There was velocity ambiguity in measuring the velocityofwater.
利用超声波进行水速测量时存在速度模糊问题。
2
On the basis the principle of hydrodynamics , the paper deduces the function ofvelocityofwater ingress, and figures out survival time.
根据流体力学的原理，使用破损船舶的进水速度函数，得到船舶进水速度随时间的变化曲线；
3
The study showed that when length of circular column part is 2.5 ~ 3.0 times outlet diameter, abrasive particle velocity near to 95% velocityofwater-jet.