This is actually a speed control device that is in use.
其实这是一种正在使用中的减速装置。
A blower speed control device can be incorporated to allow adjustment of the clean air velocity.
可加装风机调速装置以调节洁净空气速率。
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。
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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