脱脂及酸洗处理欠好会形成镀层附着力欠好，镀不上锌或锌层掉落。

Degreasing and pickling treatment will lead to the formation of good adhesion of the coating is not good, not on the zinc or zinc coating layer.

youdao

脱脂及酸洗处理欠好会形成镀层附着力欠好，镀不上锌或锌层掉落。

Degreasing and pickling treatment will lead to the formation of good adhesion of the coating is not good, not on the zinc or zinc coating layer.

youdao