为实现铜-铝管的优质焊接，需要研制相应的焊接设备。

Special welding equipment must be developed, to achieve Cu-Al pipe weldment in high quality.

youdao

为实现铜-铝管的优质焊接，需要研制相应的焊接设备。

Special welding equipment must be developed, to achieve Cu-Al pipe weldment in high quality.

youdao