短語(yǔ)詞組短語(yǔ)Hollow Steel Section 薄壁型鋼hollow -faced blade section 凹面翼斷面hollow section steel fence 空心鋼欄square hollow section columns 方管柱Square hollow section steel 方管鋼hollow section steel fencing 測(cè)孔千分尺square hollow section joints 方管節(jié)點(diǎn) 返回 hollow section