right-angle handpiece of dental engine

例句：

1. 1.The dentist uses a right-angle handpiece to drill holes in the teeth.
   牙医使用直角钳口钻牙齿。
2. 2.The surgeon used a right-angle handpiece to cut through the tissue.
   外科医生使用直角钳口切开组织。
3. 3. The engineer designed a right-angle handpiece for precision cutting.
   工程师设计了一个用于精密切割的直角钳口。