“螺母”的拼音为：luó mǔ...

拧下车轮螺母，放掉车胎的气，换上备用胎。Remove wheelnuts, let down tyre, put on spare.先松开螺母，然后卸下车轮。First loosen the nuts, then take off the wheel.这个旧螺母咬不住 扣儿.This old nut won't bite [ grip ] ....

“螺母”的英语可以翻译为：nut，blind nut，cap nut，cover nut ...