Our current industries include primary industry, like mining, secondary industry, like manufacturing, and tertiary industry, like the service industry.
我们现在的产业结构，第一产业(比如)开采业，第二产业，比如加工业，第三产业，(比如)服务业，这三个产业之间的关系。
The synthesis and developing current situation of rubber accelerator TBBS and its material tertiary butyl amine were introduced.
介绍了橡胶硫化促进剂TBBS及其原料叔丁胺合成方法及开发现状。
The synthesis and developing current situation of rubber accelerator TBBS and its material tertiary butyl amine were introduced.
介绍了橡胶硫化促进剂TBBS及其原料叔丁胺合成方法及开发现状。
应用推荐