activity of small earthquake的用法和样例：
- Using 40 mechanism solutions of earthquake focus and 3 synthetic solutions of small earthquake, the crustal stress field in and around Gansu region is discussed.
- The accounting law has offered the mandatory norm for accounting activity of small and medium-sized enterprises.
- The results indicated that the contents of DNA and the total activity of maltase of small intestine mucosa in groups CH were significantly increased than those in group N (P0.05).
- I'm sony, but we're sold out of small sizes.