During different working conditions, we need repeated experiment 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。

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A high level energy group was added into this repeated experiment. 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。

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After repeated experiment, I have found the correction process involving self-correction, peer-correction and teacher-correction at the same time is efficient and worthwhile.

经过多次实验，我发现自己改→同伴改→老师改这一过程方法颇为有效，值得应用。

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Then they repeated the experiment using their control word instead.

VOA: special.2009.08.18

It can only confirm expected results through repeated experiment.

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To verify the findings, the researchers repeated the experiment with 67 other co-eds in long-term relationships.

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The scientists repeated the experiment on untrained volunteers and none noticed the gorilla.

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