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The oil plays two roles of transmission energyand __________on the surfaces of working interaction.
The equations of ____________, Bernoulli and momentum are basic motion equations that describe the dynamics laws in flowing fluid.
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.