... wearing principle 磨损机理 nitrogen-containing organic compounds 有机含氮化合物 color spots 色斑 ...
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Amine: Any of a class of nitrogen-containing organic compounds derived, either in principle or in practice, from ammonia (NH3).
胺：原则上或实际上是从氨(NH3)衍生的含氮有机化合物的总称。
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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