swinging arm head-positioning actuator

例句：

1. 1. Thisnew model has a swinging arm that can adjust the angle of the screen for better viewing.
   这款新型号具有可以调整屏幕角度的摆动臂，以获得更好的观看体验。
2. 2. The engineer used a swinging arm to adjust the position of the machine parts.
   工程师使用摆动臂来调整机器部件的位置。
3. 3. The swinging arm head-positioning actuator is an essential component in many industrial robots.
   摆动臂头部定位执行器是许多工业机器人中不可或缺的组成部分。