这个发动机转速高时噪音非常大。

The engine is very noisy at high speed.

《牛津词典》

你在购买平衡机的时候，不要只问机器能达到多高的转速，一定要问清楚平衡斯太尔等大传动轴时能达到的转速。

When you buy the balance machine, don't just ask how high can the speed of the machine, be sure to ask the big shaft when Steyr balance can reach the speed of.

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由于加进适量极压添加剂对高转速，大进刀具时，刀具仍然耐磨，制品表面光滑。

Due to the amount of extreme pressure additives on high speed, into the cutter, cutter still wear, smooth surface products.

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