During different working conditions, we need repeatedexperiment and optimization for getting the best results of drilling and blasting method.
在不同的工作环境中，需经反复的试验与优化，才能使钻爆法施工获得最佳效果。
2
A high level energy group was added into this repeatedexperiment. The experiment included three groups i. e. high, medium and low energy levels.
本重复试验增加一个高能组，共设高、中、低三个能量水平组。
3
After repeatedexperiment, I have found the correction process involving self-correction, peer-correction and teacher-correction at the same time is efficient and worthwhile.