It was proved that the practical effect is good.
生产实践证明效果良好。
It has been proved in the practice that the method has good effect.
经实际改造后，取得良好效果。
It was proved that this method had a very good effect on decongestant tissues.
证明这种方法能有效解除组织静脉淤血。
It was proved that this method had a very good effect on decongestant tissues.
证明这种方法能有效解除组织静脉淤血。
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