它的广泛报导集中在铝与它的合金焊接，包括所有焊接技术。

Its comprehensive coverage focuses on welding of aluminum and its alloys, covering all welding techniques.

youdao

它的广泛报导集中在铝与它的合金焊接，包括所有焊接技术。

Its comprehensive coverage focuses on welding of aluminum and its alloys, covering all welding techniques.

youdao