基本解釋[機(jī)械工程]門座起重機(jī)詞組短語短語Semi -portal slewing crane 半門座起重機(jī)slewing portal crane 旋臂轉(zhuǎn)柱起重機(jī);旋臂轉(zhuǎn)柱吊車slewing g portal crane 旋臂轉(zhuǎn)柱起重機(jī)portal slewing crane更多詞組專業(yè)釋義機(jī)械工程門座起重機(jī)