welded stayed construction

焊接专业网焊接英汉词典... ... welded splice 焊接接头 welded stayed construction 焊接的支撑结构 welded steel 焊接钢 ...

化工和机械英文... ... 焊接有害气体 welding toxie gases 焊接支撑结构 welded stayed construction 焊接质量 welding quanlity ...