The motors are designed for variable frequency drive.

电机变频驱动设计。

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It is variable frequency drive that controls the movement of the belt.

不同频率的驱动控制压带的运动。

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Finally, analysis speed-loop of variable frequency drive crumb cake hydraulic machine.

最后，分析了变频调速液压屑饼机的调速回路。

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The SS-AR2's incorporated drivers support a maximum input power of 100 watts through a 25 mm (one inch) soft dome, a 130 mm (five inch) sliced-paper cone and a 165 mm (six and a half inches) aluminum cone (double-drive system), producing a frequency response from 42 Hz to 60kHz.

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Apple introduced its version, called Fusion Drive, that tiers storage on flash memory or a HDD depending upon frequency of use, but appearing to the user as a single storage device.

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