| 释义 |
〔annulation〕A ringlike structure, segment, or part.环状物：环状结构或部分〔prolate〕Having the polar axis longer than the equatorial diameter:长球面的：垂直对称轴比环状结构平面最大直径长的：〔azine〕A six-membered heterocyclic compound, such as pyridine, that contains one or more atoms of nitrogen with a ring structure resembling that of benzene.吖嗪，连氮：由六种元素构成的杂环化合物，如氮苯（吡啶），它由一个或更多的氮原子构成，呈环状结构，类似苯的结构 |