1)  annular,cyclical,ring shaped
环的
2)  monocyclic
单环的
3)  characteristic of a ring
环的特征
4)  the level of rings
环的阶
5)  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。
6)  semiorderings of a commutative ring
环的半序
参考词条
补充资料：(Z,Z)-聚环氧乙烷聚甲基环氧乙烷双油酸酯
CAS：67167-17-3

中文名称：(Z,Z)-聚环氧乙烷聚甲基环氧乙烷双油酸酯

英文名称：methyl-, polymer with oxirane, di-9-octadecenoate, (Z,Z)-Oxirane

Poly(propylene oxide, ethylene oxide), diester with oleic acid
说明：补充资料仅用于学习参考，请勿用于其它任何用途。