1.
Equivalent Conditions over a Non-negative Commutative Semiring;
非负幂等交换半环上矩阵可逆的几个等价条件
2.
Armendariz and Semicommutative Properties of Matrix Rings;
矩阵环的Armendariz和半交换性质
3.
Central Elements and Commutativity of Semi-prime Rings;
Bear半单纯环的中心元与交换性
4.
Commutativity of Semiprime Rings with Constraints on Varying Polynomial Equality
满足某可变恒等式的半质环的交换性
5.
Some Commutativity Theorems for Jacobson Semi-simple Rings
Jacobson半单纯环的几个交换性定理
6.
The Full h-ideals of an Additively Inverse Semirings in Which Addition is Commutative and the Left Ideals of Some Ordered Semigroups;
交换逆半环的全h-理想及若干序半群的左理想
7.
Some Studies on Weakly Semiprime Submodules and Commutativity of Semiprime Rings;
弱半素子模与半素环交换性的一些研究
8.
Orthogonal Generalized Derivations in Semiprime Rings and Annihilator on Co-commutators with Derivations in Prime Rings;
半素环上的正交广义导子和素环上导子的协交换子的零化子
9.
The Classification of Some Congruence-Simple Finite Semirings with Commutative and Idempotent Addition
关于加法交换幂等的同余单有限半环的分类
10.
semi-automatic private branch exchange
半自动专用小交换机
11.
uliar to a seminatural economy
半自然经济的物物交换
12.
semielectronic telephone switching system
半电子制电话交换机
13.
The Connection of the Locally Compact Commutative Semigroup and Infinite Closed Subsemigroup;
局部稠密的交换半群与无限闭子半群的关系
14.
At half-time the teams changed ends.
比赛进行一半时，双方交换了场地。
15.
Research and Applications in Cryptography Based on the Nocommutative Monoid;
非交换（壹）半群在密码学中的应用研究
16.
Sb/As Exchange at the Interface of Heterostructures
半导体异质结界面处Sb/As交换反应研究
17.
Closed-Loop Control of AC-AC Matrix Converter Based on DSP;
基于DSP的交交矩阵变换器闭环控制
18.
Research on AC-AC Mode AC/AC Converters with High Frequency Link;
交—交型高频环节AC/AC变换器研究