Maintenance-free brushless drive motor with frequency inversion, has high start torque and short accelerationtime.
免维护高力矩无刷变频电机直接驱动,启动力矩大、加速时间短。
2
Seismological models are generally used to enrich the existent sets of earthquake records with artificial ground accelerationtime histories.
地震模型一般是应用人工地面加速度时间历程存在集来丰富地震记录。
3
The normal method to simulate earthquake accelerationtime history is analyzed, and it is shown clearly that choice of initial accelerationtime history is important.