由于减少了齿轮箱和其他相关零部件，发电机的转速每分钟仅16 - 17转，风机运行的可靠性和效率显著提高。

Due to no gearbox and other related parts, the turbine runs at low speed with only 16-17 RPM, so the reliability and efficiency is highly improved.

youdao

两个引擎的转速都是每分钟2,500转。

Both engines were running at 2,500 rpm.

《柯林斯英汉双解大词典》

转速计在时速70英里时显示每分钟高达3000转。

The tachometer registers a rather high 3,000 rpm at 70 mph.

《柯林斯英汉双解大词典》

Even though a hard drive spins at 7200 times per minute or even faster, that's relatively slower than the speed of light.

即使一个硬盘驱动器的转速达到每分钟7200次,甚至更快，仍然比光速慢。

哈佛公开课 - 计算机科学课程节选