ān / zhuāng / wō / gǎn / shí / yào / xiān / jiǎn / chá / tā / hé / wō / lún / de / niè / hé / qíng / kuàng

安装蜗杆时，要先检查它和蜗轮的啮合情况。

When installing the worm, first check its meshing with the worm wheel.