“USM”简单造句，USM造句子

比机身马达的速度提高，再配合十字对焦点，可以一次合焦，比如拍猫，猫乱跑乱跳，没有USM就可能抓不到最好的镜头，并且拍摄的成功率低很多。

Then how USM works and how the ellipse trace of particle on the surface of stator forms are analyzed.

其次，设计了实用的USM驱动电路

However, tool wear is high in USM, due to the abrasive cutting action.

但是，由于USM是磨削加工，因而*具损耗大。

A180 mm lens is getting long for portraits and the Canon EF180 mm f/3.5 L USM Macro Lens' slow focusing might have an impact here as well.

Based on the contact pattern between the stator and rotor, USM is classified as contact type and non-contact type.