短語(yǔ)詞組短語(yǔ)double pole mast 雙桿輕便井架;雙腿架;雙桿桅pole -type mast 桿式井架single pole mast 單桿架pole derrick derrick mast 起重扒桿gin pole mast 桅桿shore mast pole 岸上信號(hào)旗桿High mast pole 高桿燈Diameter of the mast pole 抱桿尺寸lighting mast lighting pole 路燈柱 返回 pole mast