现在，大多数常用的企业硬盘驱动器(HDD)都受到磁头移动速度、盘片旋转速度和查找延时的限制。

Now, the most commonly used enterprise hard disk drives (HDDs) are limited by the rate of head movement, the speed of the spinning platter, and seek latency.

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从机械振动理论出发，用可靠性设计中的联结方程，得出了其在常用工况下按传动轴的临界转速进行可靠性设计的公式。

The paper starts from the theory of mechanical vibration, with tie equipment in the reliability design, and obtains a formula of design on critical speed in common use situation.

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分析结果表明，对于常用的水系统控制方式而言，水泵转速（流量）比与轴功率比的三次幂关系不成立；

The results show that for the common pump control methods, the third power relation between the pump rotate speed(water volume) ratio and the shaft power ratio is not true;

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在永磁无刷直流电机中，霍尔位置传感器经常用来测量电机的转子位置和转速。

In a BLDCM, Hall position sensors (HPS) are usually used to detect the rotor's position and rotary speed.

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在工业生产中，温度、流量、转速都是常用的主要被控参数。

During the industry production, the temperature flow and the rotate speed are usually the most important controlled arguments.

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在工业生产中，温度、流量、转速都是常用的主要被控参数。

During the industry production, the temperature flow and the rotate speed are usually the most important controlled arguments.

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