The central notion in commutative algebra is that of a prime ideal.交换代数中最核心的概念就是素理想.It'should be clear that vector addition is commutative.可清楚地看0剑0矢量加法满足对易律.The groups of the solvable equations are commutative.可解方程的...
Consider what your likes and dislikes are about your job.想想工作中哪些部分是自己喜欢的，哪些是不喜欢的。Chris likes music and has a large collection of albums and cassettes.克里斯喜欢音乐，收集了大量的唱片和磁带。He likes his tea neither too hot nor too cold.他想要杯...
为了实现优良的耐用性，主体部分90％采用钛金属制造。The body is 90% titanium for ruggedness.该公司生产钛合金。The company produces titanium alloy.普通的陶瓷元件分别是钛酸钡和锆钛酸铅.Common ceramic elements are barium titanate and lead zirconate - titanate....