短语词组短语flash roaster welder 闪光焊机flash butt welder 闪光对接焊机;闪光焊机;闪光对焊工Shear -flash Butt Welder machine 剪切flash h butt welder 闪光对接焊机operated cam type flash welder 电动凸轮式闪光焊机motor -operated cam type flash welder 电动凸轮式闪光焊机 返回 flash welder