back weld
短语词组
- back step welding 反手焊接;退焊接;逐步退焊法;退焊
- back ward welding 反手焊接;后退焊
- back running welding 封底焊
- back hand welding 反手焊接;后退焊;反向焊接;反向熔焊
- back run welding 封底焊;封四焊
- back step welding procedure 逐步退焊法
- Back sealing welding 封底焊;焊接
- back -welding shape 背面成形
- cast iron back -welding 铸铁补焊 返回 back weld