地震模拟振动台基础实质上是一个给振动台面运动提供反力的质量块，它是振动台可动系统的重要组成部分。
Actually, foundation of shaking table is a mass that provide reaction to table movement and is an important part of the moving system.
针对发动机振动主动控制系统设计了一种高性能电磁反力作动器。
A high performance electromagnetic counter-force actuator is designed for engine active vibration control system.
计算了典型的单机开式复合约束绳系的动点坐标、绳力、吊点反力。
It is established that the general iteration formulas of the moving point coordinates.
计算了典型的单机开式复合约束绳系的动点坐标、绳力、吊点反力。
It is established that the general iteration formulas of the moving point coordinates.
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