A new type phosphating solution of zinc series at low temperature was prepared.

研制了一种新型低温锌系磷化液。

youdao

A zinc-series phosphating process at room temperature was developed.

研制了一种常温锌系磷化工艺。

youdao

A zinc-series phosphating process at room temperature was developed.

研制了一种常温锌系磷化工艺。

youdao