upper rail上: upper; up; upward导槽: channel guide; conduit ferru ...上部轨 上导槽: upperrail导槽: channel guide; conduit ferrule; guidance; guide barrel; guide slot; guided groove; guide path上导板: upper guide plate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:上导槽,即可在微信中查询翻译