周期性不平衡
- 网络cyclical disequilibrium;Cyclical Disequilibria
周期性不平衡-
往复式活塞发动机作为机动车辆的主要动力源，其固有的燃气压力、输出转矩的周期性波动、不平衡惯性力（矩）必然会引起发动机本身的刚体振动和弹性振动。
Reciprocating piston engine is the main power source of motor vehicle and the rigid body vibration and elastic vibration are caused by its natural combustible gas pressure 、 output torque of periodic fluctuations 、 the unbalanced inertial force ( moment ) .