It has been proved in experiments that these methods not only improve the efficiency of the hydraulic system, but also the controllability of excavator.
试验证明，这些措施的采用，不仅提高了液压系统效率，而且使挖掘机的操纵性得到明显提高。
It is proved by experiments that under appropriate machining conditions, abrasive belt vibration grinding can not only reduce workpiece surface roughness but also improve work-piece form accuracy.
实验表明，在适当的加上条件下，砂带振动磨削不仅可以降低工件的表面粗糙度，而且可以提高工件的形状精度。
Through the analysis and comparison on several softening methods for sweaters, it is considered that better results can be achieved by protease treatment, which has been also proved by experiments.
本文通过对羊毛衫几种柔软方法的分析、比较，经过实验证实，选用蛋白酶进行柔软处理，能取得较好的效果。
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