two lines bucket-chain unloader双线: diplonema; duplet; doublet斗: fight; tussle链: chain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:双线斗链卸车机,即可在微信中查询翻译