单词	pyrrolidone
释义	pyrrolidone /pɪˈrɒlɪdəʊn / noun [mass noun] Chemistry A colourless weakly basic solid which is a keto derivative of pyrrolidine. Chemical formula: C4H7NO. The water-soluble macromolecular compound preferably includes a copolymer of N-vinyl - 2 - pyrrolidone and vinyl acetate.
随便看	nasi Padang Naskapi naskhi Nasmyth, James Nasmyth's membrane Nasmyth–Cassegrain naso- nasociliary nasofrontal nasogastric nasojejunal nasolabial nasolachrymal nasolacrimal nasologic nasological nasologist nasology nason nasonite nasopalatal nasopalatine nasopharyngeal nasopharyngeal tonsil nasopharynx

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