| 释义 |
Economical significance
基本例句
经济意义
So it is economical to repair the crack of the cavity cover and reuse it.对受损缸盖进行修复再利用是极其具有经济意义的。
Then, give the economic significance and calculational methods of these four kinds calculational methods.然后，重点介绍了四种类型的技术进步贡献的经济意义及计算方法。 |