单词	nonionic
释义	nonionic adjective non·​ion·​ic ˌnän-(ˌ)ī-ˈä-nik  : not ionic especially : not dependent on a surface-active anion for effect nonionic surfactants Example Sentences Recent Examples on the Web NBSCorningCorning, New YorkNBS – as in nonbinding surface – is a nonionic hydrophilic polymer coating that prevents traces of proteins, DNA, or drug compounds from sticking to test tubes or assay plates. David Pescovitz, WIRED, 1 Jan. 2001 Word History First Known Use 1929, in the meaning defined above
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