Tests in laboratory and industry have shown that ball_milling with variable rotational speed can raise the efficiency of ball_milling by a big margin and improve the processing quality of the powders.
实验室和工业应用试验结果表明，变转速球磨方法不仅能较大幅度地提高球磨效率，而且能对粉料加工质量产生明显的影响。
The results also show that the performance of variable working condition of hybrid system can be improved by changing the rotational speed of gas turbine.
研究结果还表明，由于供给燃料发生变化而引起的燃气轮机转速的改变，有利于改善混合动力系统的变工况性能。
The results also show that the performance of variable working condition of hybrid system can be improved by changing the rotational speed of gas turbine.
研究结果还表明，由于供给燃料发生变化而引起的燃气轮机转速的改变，有利于改善混合动力系统的变工况性能。
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