并且微弧氧化先期形成的主要是致密层，疏松层则主要是在后期形成。

The film formed in the early stage is more compact than in the later stage.

youdao

并且微弧氧化先期形成的主要是致密层，疏松层则主要是在后期形成。

The film formed in the early stage is more compact than in the later stage.

youdao