喷镀

pēn dù zhī qián biǎo miàn shang yīng dāng méi yǒu yóu zhī yǎng huà pí xiù bān shī qì huò qí tā zá wù

喷镀之前，表面上应当没有油脂、氧化皮、锈斑、湿气或其它杂物。

Immediately before spraying it should be free from grease, scale, rust, moisture or other foreign matter.