usm drive 超声电机驱动
stator of USM 超声电机定子
standing wave usm 驻波超声波电机
the principle of USM 超声马达原理
the application of USM 超声马达应用
the combined USM and ECM 超声电解复合加工
usm user based security model 基于用户的安全模型
user-based security model usm 基于用户的安全模型
ABBREVIATION for Unlisted Securities Market 无牌价证券市场 [stock exchange]
USM will try to enhance high frequencies, which is not something that I want.
超声波马达将努力提高高频率，这不正是我想要的。
Perhaps, this is the place for USM Eng Campus students to spend their weekend.
我想，这里或许是理工学子在周末可以消磨时间的地点。
Then how USM works and how the ellipse trace of particle on the surface of stator forms are analyzed.
接着分析了超声波电动机的工作原理和定子表面质点椭圆运动的形成机理。
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