Maintenance-free brushless drive motor with frequency inversion, has high start torque and short acceleration time.
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。
The normal method to simulate earthquake acceleration time history is analyzed, and it is shown clearly that choice of initial acceleration time history is important.
分析了地震加速度时程模拟的常规方法，指出初始加速度时程的选取十分重要。
The acceleration time response graphs at desired positions were presented under three load conditions: the maximum dynamic pressure, before separation, after separation.
给出了最大动压、一二级分离前和分离后三种工况下卫星结构的加速度响应历程。
The paper has studied and discussed the amplification of incident waves about acceleration time-domain and acceleration response spectrum in local deposit on the bedrock of single layered soil .
本文研究并讨论了基岩上单一土层中沉积局部场地对入射地震波的加速度时程和加速度反应谱的放大作用。
Methods Liver scanning was performed with a high frequency transducer to measure the velocity acceleration time and resistant index of portal vein and hepatic artery after finishing the anastomosis.
方法选用高频手术专用探头，于手术中门静脉、肝动脉吻合完成后立即测量肝动脉及门静脉血流速度，并计算快速充盈时间及阻力指数。
Methods Liver scanning was performed with a high frequency transducer to measure the velocity acceleration time and resistant index of portal vein and hepatic artery after finishing the anastomosis.
方法选用高频手术专用探头，于手术中门静脉、肝动脉吻合完成后立即测量肝动脉及门静脉血流速度，并计算快速充盈时间及阻力指数。
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