Under the periodical loads, the shaft must have the torsional vibration, named "beat", because the shafting has not only inertia but also elasticity.
轴系装置由于不仅具有惯性而且具有弹性，因此在周期性荷载作用下，会产生扭转振动，甚至于产生拍振。
Under the periodical loads, the shaft must have the torsional vibration, named "beat", because the shafting has not only inertia but also elasticity.
轴系装置由于不仅具有惯性而且具有弹性，因此在周期性荷载作用下，会产生扭转振动，甚至于产生拍振。
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