There is another form of vitamin a that coats the inside of the cells with a protective lining that sustains the skin of the cell as it heats up in the act of cell metabolism (digestion of sugar).
第二种维生素a用一层支持细胞表皮的保护层把细胞从里面包起来，因为在细胞代谢(消化糖类)中细胞表皮会变热。
The calculation method about the minimum lining thickness of concrete protective layer is given in the cold region.
提出了寒区混凝土防护层渠道最低衬砌厚度的计算方法。
The utility model comprises a lining core, a biological specimen struck on the lining core, and two layers of transparent protective films arranged outside the lining core and the biological specimen.
本实用新型包括了衬芯，贴放在衬芯上的生物标本，以及置于衬芯和标本外面的二层透明保护膜。
The utility model comprises a lining core, a biological specimen struck on the lining core, and two layers of transparent protective films arranged outside the lining core and the biological specimen.
本实用新型包括了衬芯，贴放在衬芯上的生物标本，以及置于衬芯和标本外面的二层透明保护膜。
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