back weld
短语词组
- back step welding 反手銲接;退銲接;逐步退銲法;退銲
- back ward welding 反手銲接;後退銲
- back running welding 封底銲
- back hand welding 反手銲接;後退銲;反曏銲接;反曏熔銲
- back run welding 封底銲;封四銲
- back step welding procedure 逐步退銲法
- Back sealing welding 封底銲;銲接
- back -welding shape 背麪成形
- cast iron back -welding 鑄鉄補銲 返回 back weld