短語(yǔ)詞組短語(yǔ)heavy ice line 重冰線路heavy -haul line 重載線路heavy seeding shear line 重型剪切機(jī)作業(yè)線heavy coil continuous line 大盤重連續(xù)線heavy haul railway line 重載線路heavy rod rolling line 大盤條生產(chǎn)線heavy traffic trunk line 繁忙干線heavy los s line 重?fù)p線路heavy hanging wall line 粗實(shí)線 返回 heavy line