two lines bridge-type screw unloader双线: diplonema; duplet; doublet桥式: bridge type螺旋: corkscrewspin; screw; spiral ...卸车: unload; unload from a vehicl ...机: machine; engine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:双线桥式螺旋卸车机，即可在微信中查询翻译
