development of theories

• 理论发展

development of theories的用法和样例：

例句

1. It gives out the new orientation of well test theory.
   指出了试井理论发展的新方向。
2. The development of Korea's poetical theories witnesses their zenith in the Yi Dynasty.
   朝鲜王朝是朝鲜历史上诗歌理论发展的顶峰时期。