这种光盘有一种染色层，光盘刻录机可以将其涂黑或者留一些空白，这些黑点和空白点就是数码。
These CDs have a dye layer that the CD writer can darken or leave clear. The clear and dark spots are the digital code.
石棉纤维的表面覆盖有一层铁或钙，这就是为什么用铁染色时石棉纤维经常被称为“含铁小体”。
The asbestos fiber becomes coated with iron and calcium, which is why it is often referred to as a "ferruginous body" as seen here with an iron stain.
结果HE染色显示有4层以上的角质形成细胞和基底膜层形成，并有轻度角质化；
Results HE staining demonstrated the formation of more than 4 lays of keratinocytes and basement membrane, with slight keratinization of the cells.
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