weld with backing strip的意思|示意
美 / /
英 / /
背面垫板条焊接
weld with backing strip的网络常见释义
背面垫板条焊接 ... nonfusible weld backing 非熔性焊接背垫 weld with backing strip 背面垫板条焊接 weld with backing ring 背面垫环焊接 ...