1)  ring radicals
环的根
2)  annular,cyclical,ring shaped
环的
3)  monocyclic
单环的
4)  characteristic of a ring
环的特征
5)  the level of rings
环的阶
6)  additive group of a ring
环的加群
1.
In this paper,the author discusses the order of an element of periodic groups and free groups,studies the order of an element of the additive group of a ring and establishes the concept of the characteristic number of a ring,and gives two popularizations of the order of an element of groups:the order of an element to a subgroup and the order of an element of semigroups.
　讨论了周期群与自由群的元素的阶,研究环的加群的元素的阶并建立环的特征数的概念。
参考词条
补充资料：5-异氰酸根合-1-(异氰酸根甲基)-1,3,3-三甲基环己烷与α-氧杂环庚烷酮的聚合物
CAS: 58675-12-0
分子式: (C12H18N2O2·C6H10O2)x
中文名称: 5-异氰酸根合-1-(异氰酸根甲基)-1,3,3-三甲基环己烷与α-氧杂环庚烷酮的聚合物

英文名称: 2-Oxepanone, polymer with 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane
2-oxepanone, polymer with5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane
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