交换开关

webfed offset rotary press【印刷】

feeder, rotary filling containers with fluent solid material by means of rotary feeders

rotary-drilling machine with coupling (hitch) for mining

gyratory crusher (rotary crusher)

anti-fall device of rotary machinery【矿】

rotary table assembly sewing machine

rotary valve

rotary drill bit (rotary boring head) deep drilling