A simple method for calculating the standard formation heats of organic compounds containing nitrogen or sulfur by using of the group electronegativity is built up in this paper.

建立了用基团电负性计算含氮含硫有机物键裂能的简单方法，并且得到自由基标准生成热的计算方法。

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Additionally the microorganisms must be supplied in the growth medium with nitrogen-containing compounds such as ammonium sulfate, ammonia, or urea, as well as with inorganic phosphates.

另外必须提供的微生物在与含氮如硫酸铵，氨水或尿素化合物生长介质，以及与无机磷酸盐。

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Chlorosulfonyl isocyanate as an important intermediate was applied toward the syntheses of four to seven member heterocyclic compounds containing oxygen, nitrogen, sulfur atoms.

氯磺酰异氰酸酯可用于合成含氧、氮、硫等原子的四至七元杂环化合物。

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At the heart of the molecule are four different nitrogen-containing compounds called bases.

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He searched for years and eventually lighted on a mixture of oleic acid (a fatty acid found in various vegetable oils) and nitrogen-containing compounds called amines.

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