return idler从动: slave; slave drive; driven滚轮: contact roller; trolley whee ...凸轮从动滚轮: cam follower从动滚轮 回行惰轮: returnidler凸轮从动滚轮销: cam follower pin下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:从动滚轮，即可在微信中查询翻译
