hollow section
短语词组
- Hollow Steel Section 薄壁型钢
- hollow -faced blade section 凹面翼断面
- hollow section steel fence 空心钢栏
- square hollow section columns 方管柱
- Square hollow section steel 方管钢
- hollow section steel fencing 测孔千分尺
- square hollow section joints 方管节点 返回 hollow section