一个物体若要在某一点处处于转动平衡，在这一点处的总力矩必须为零。
For an object to be in rotational equilibrium about a certain point, the total torque about this point must be zero.
采用变频调速装置进行电器高速，操作方便，转动平衡，安全准确。
The machine USES frequency conversion device to regulate speed electrically. which is featured by easy operation, steady rotation, safety and correctness.
对变速转子准稳态主动平衡系统，可按一定时间步长把变转速离散成有限个转动角速度。
For a quasi steady-state active balancing system of a speed-varying rotor, according to certain time steps the varying speed of the rotor is discretized into finite constant angular speeds.
对变速转子准稳态主动平衡系统，可按一定时间步长把变转速离散成有限个转动角速度。
For a quasi steady-state active balancing system of a speed-varying rotor, according to certain time steps the varying speed of the rotor is discretized into finite constant angular speeds.
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