Fluorine, one of the necessary trace elements of human beings is presented in the forms of inorganic and organic compounds in foods, such as sodium fluoride, silicon fluoride, and fluoroacetate etc.

氟是人体必需的微量元素之一,通常以各种多元无有形式存在。

A series of reversible thermochromic paints were prepared using different kinds of inorganic compounds as filler,cresol red as chromophoric reagent and boric acid as delomorphic reagent.

以甲酚红为发色剂,硼为显色剂,选择不同的无填料,制备出逆热致变色颜料。

Some derive their carbon from inorganic sources, and their hydrogen from hydrogen sulfider or other inorganic compounds, while other bacteria may be photosynthetic or saprobic.

某些细菌从无原料中获取碳源，从硫化氢其他无化合物中获取氢，而另一些细菌则是光能合成的腐生的。