quaternary
[kwə'tə:nəri]
adj. 四进制的；四个一组的
n. 四；四个一组
同义词
参考例子
1.Four new types of organic siloxane surfactants with quaternary ammonium group have been obtained.
通过多步骤合成了四种含有季铵基的有机硅表面活性剂。
2.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。
3.The natural thermoluminescence in Quaternary sediment has stored accumulated irradiated dose since the sediment deposited.
第四纪沉积物的天然热释光中储存有自沉积以来的累积辐射剂量。
英文解释
n.
1.last 2 million years
2.the cardinal number that is the sum of three and one
adj.
1.consisting of or especially arranged in sets of four
2.coming next after the third and just before the fifth in position or time or degree or magnitude
网络释义
quaternary
四元的; 四级的; 第四纪; 第四期;
Quaternary Geology
第四纪地质学; 第四纪地质学 --; 第纪地质学;
quaternary structure
四级结构; 释义：四级结构;
quaternary geochronology
第四纪地质年代学;
Quaternary deposit
第四纪层;