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.
研究了ZM5镁合金磷酸盐表面处理工艺。
The surface treatment process for ZM5 using phosphate is investigated.
使用两种钢基材进行比较：一种未经任何表面处理，另外一种经过磷酸化表面处理。
Two surface treatment methods for same steel substrate are used and tested: one surface without any treatment and the other with a phosphatizing surface treatment.
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