Instructional strategy of teaching students to maste the knowledge of elements and compounds 学生学习元素化合物知识的教学策略
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Please visit our bookshop s website to download our catalogue and summaries of the contents of maste 欢迎到书店网址下载最新出版品的目录及内容摘要介绍：
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That is how we can maste the structure and the congruences on it through investigating the property of its idempotents 也就是，通过考察半群的幂等元性质能多大程度地把握半群的结构及其上的同余。
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For the p - regular semigroup . this problem turns to be that how we can maste the structure and the congruences on it through investigating the property of its characteric set 对p -正则半群而言，该问题相应的为，能从其特征元的性质多大程度地把握p -正则半群的的结构和同余。
