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quaternary [kwə'tə:nəri]
基本释义
- a. 由四要素形成的
词形变化
- 复 数：qua·ter·nar·ies
常用短语
- quaternary ammonium compound
季铵化合物
- quaternary ammonium compound
英英解释
2个名词解释
- last 2 million years
[同] age of man, quaternary, quaternary period - the cardinal number that is the sum of three and one
[同] 4, four, foursome, iv, little joe, quadruplet, quartet, quatern, quaternary, quaternion, quaternity, tetrad
2个形容词解释
- consisting of or especially arranged in sets of four
[同] quaternary, quaternate
[例]- quaternate leaves
- a quaternary compound
- coming next after the third and just before the fifth in position or time or degree or magnitude
[同] 4th, fourth, quaternary
[例]- the quaternary period of geologic time extends from the end of the tertiary period to the present
- last 2 million years