quaternary a.四个一组的,四元的,四价的...quaternary ammonium hydroxide 季铵碱...quaternary ammonium base 季铵碱...quaternary structure 四级结构...quaternary cationics 季盐阳离子表面活性剂;季铵盐阳...quaternary ammonium salt 季铵盐...quaternary multiplication 四进制乘法...quaternary system 四进制...quaternary stibonium hydroxide 季锑碱;氢氧化季锑...quaternary ammonium hydrate 季铵碱...quaternary ammoniun compounds 季铵化合物...quaternary compound 四元化合物...quaternary alloy 四元合金...quaternary phase equilibria 四相平衡...quaternary phosphine 季┣...quaternary ammonium halide 季铵卤化物...quaternary phosphonium compound 季┣化合物;季磷┹化合物...quaternary tree 四叉树...quaternary ammonium bases 季铵硷...quaternary halide 卤化季盐...quaternary ammonium compound 季铵化合物;四级铵化合物...
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