短語詞組短語revolving pillar jib crane 回旋立柱臂桿起重機(jī);立柱式旋臂起重機(jī)swinging pillar jib crane 定柱轉(zhuǎn)臂起重機(jī);定柱旋臂起重機(jī) 返回 pillar jib crane