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quaternary

英[kwə'tə:nəri]美[kwə'tə:nəri]

a. 由四要素形成的

复　数：quaternaries

同：	[n.] 4, age of man, four, quaternary period [a.] 4th, fourth, quaternate

isoquinoline quaternary ammonium salt
异喹啉季铵盐收藏
The quaternary sediments are largely undeformed
第四纪的沉积物大部分未变形。收藏
Quaternary ammonium compound
季铵比合物收藏
The Cenozoic Era is composed of Tertiary Period followed by Quaternary Period.
新生代是由第三纪和第四纪组成的。收藏
A great many proteins, especially enzymes, are oligomeric and consequently possess quaternary structure.
很多蛋白质尤其是酶类,是低聚物,因此拥有四级结构。收藏

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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

形容词解释：

consisting of or especially arranged in sets of four
- quaternate leaves
- a quaternary compound
[同] quaternary, quaternate
coming next after the third and just before the fifth in position or time or degree or magnitude
- the quaternary period of geologic time extends from the end of the tertiary period to the present
[同] 4th, fourth, quaternary

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