He drew a conclusion after many experiments.

他在多次实验之后得出了一条结论。

youdao

After many experiments, the article proves that the blasting effect is good.

经现场试验证实，爆破效果得到改善。

youdao

After many experiments, the article proves that the blasting effect is good.

经现场试验证实，爆破效果得到改善。

youdao