磷化：在钢铁制件表面上形成一层不溶解的磷酸盐保护膜的处理过程。

Phosphating: in steel on the surface of product form a layer of phosphate insoluble protective film processing.

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磷化：在钢铁制件表面上形成一层不溶解的磷酸盐保护膜的处理过程。

Phosphating: in steel on the surface of product form a layer of phosphate insoluble protective film processing.

youdao