因此,在固定的量测周期中,例 如1 秒,计数脉波数量就可以如公式1 换算出马达 的每分钟转速(Rotation Per Minute,RPM),式 中 N 是每秒量测的脉波数。
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做每分钟转速下降试验时,需要一个转速表。
随着一米,其内容的频率,我能够准确地告诉每分钟转速。
With a meter which reads frequency, I am able to accurately tell RPM.
每分钟转速高达1500转,全封闭式马达,上蜡后经抛光处理,地面光亮如镜。
Its rotating speed is 1500 RPM the motor is totally enclosed. After waxing polishing the floor surface is shinning as a mirror.
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。
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