金属防腐层。概念。方法。表面准备。
Coatings for corrosion protection of metals; vocabulary, processes and surface preparation.
在化学处理之前的表面准备，移除一层金属基材。
Surface preparation of metal before chemical process. Removal of a layer of the base metal.
没有进一步的表面准备做该段塞为a部分的实验。
No further surface preparation was done to the slugs for Part a of the experiment.
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