短語詞組短語crane e rail 起重機(jī)軌Portal Crane for rail laying 鋼軌鋪設(shè)的門式起重機(jī)bridge crane rail 行車軌道crane rail clamp 起重機(jī)夾軌器crane rail bearer 吊車梁crane rail seizure 吊車卡軌Crane rail supply systems 軌道供電系統(tǒng)top elevation of crane rail 軌頂標(biāo)高rail crane 軌道起重機(jī);過軌吊 返回 crane rail