An integrating device of variable frequency and speed-down is an important driving and control unit which combines a variable frequency module, a variable frequency motor and a retarder.

变频减速一体机是将变频模块、变频电机和减速机有机集成一体的重要传动控制单元。

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The utility model belongs to a speed control device for automobiles, in particular to an automobile speed-down device.

本实用新型属于汽车的车速控制装置，尤其属于汽车减速装置。

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A method which control the step motor with 8051 microcontroller is introduced, some methods in speed-up and speed-down curve design are compared.

介绍了8051系列单片机对步进电机的控制方法，并且提出和对比了几种步进电机升降速曲线的设计方案。

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But solving that dilemma by creating a two-speed Europe with more top-down, remote governance cannot be the answer.

BBC: Referendum St

Then I spotted a lone speed-walker racing down the sidewalk.

NPR: Unearthing History in 'A Voyage Long and Strange'

The 29-year-old Londoner, who used his superior movement and hand-speed to grind Valuev down over 12 rounds, said he had fought "the perfect tactical fight".

BBC: British fans inspired win - Haye