A colorless, foul-smelling ptomaine, NH2(CH2)4NH2, produced in decaying animal tissue 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。

A hypothetical acid, NH2COOH, that exists only in the form of its esters and salts.

一种假设的酸，NH2COOH，仅存在于氨基甲酯和氨基甲盐中。

An Efficient NH2SO3H-catalyzed direct alkylation of active methylene compounds with benzylic and allylic alcohols has been reported.

报道了氨磺酸催化的活泼亚甲基化合物和醇的直接烷基化反应新方法。

The tests of four flat plate wing and wing-body models of similar geometry with various sizes have been completed in NH-2 wind tunnel of Nanjing Aeronautical Institute.

并利用四个几何相似、尺寸不同的平板机翼和翼-身组合体模型在南航NH-2风洞中进行了试验。