upset butt joint的意思|示意
美 / /
英 / /
加厚对接
upset butt joint的网络常见释义
镦锻对焊连接 ... 镦锻坯 bolt stock 镦锻对焊连接 upset butt joint 镦锻机 upset forging machine ;upsetter ;upsetting machine ;upsetting press ...