planer worm gear平面: plane; two dimensions; flat ...包: wrap络: net-like things蜗轮: worm gear; worm wheel蜗杆: worm; endless screw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:平面包络蜗轮蜗杆传动,即可在微信中查询翻译