题目内容
The Reynolds number was observed to be a ratio of the inertialforce to the _________ force.
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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.
_____________ orifice is not sensitivity to temperature, and thus it is usually used as throttle adjustor.
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