题目内容
The equations of ____________, Bernoulli and momentum are basic motion equations that describe the dynamics laws in flowing fluid.
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The Reynolds number was observed to be a ratio of the inertialforce to the _________ force.
In fact, the hydraulic lock is objective and what we can do is to try to eliminate it. The simplest method is to design_________notches on the spool core.
The types of hydraulic_________, including: (1)That occurs due to the sudden reduction of the across-section of the orifice or change of the flow direction; (2)That results from the inertia of the high speed working components suddenly braking or changing direction
The phenomenon of_________happens easily in suction of pump and valve orifice.
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