From the changes of - CH 2 - peaks, uniform adsorption of each single layer of macromolecules has been identified.

利用-CH2-峰的逐层变化规律, 确认了在组装过程中每层吸附高分子的量是一致的.

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A colorless, foul - smelling ptomaine, NH 2 ( CH 2 ) 4 NH 2 , produced in decaying animal by the decarboxylation of ornithine.

腐胺一种无色, 恶臭的尸碱, NH2 ( CH2 ) 4NH2, 产生于腐烂的动物躯体中的鸟氨酸的脱羧作用.

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