hand movement

• 手动(视力检查)

hand movement的用法和样例：

例句

1. Mushroom outlet closing and opening by hand to be inspected.
   菌形风头手动启闭试验。
2. Water is fed into the boiler by a hand pump and an injector.
   水靠著手动帮浦和注水器被注入锅炉。