Adjust speed in a small range.
需要小范围调速。
At present it has been practiced in a small range.
目前该系统已进行了小范围的试运行。
In addition, the car is fitted with a small "range-extending" combustion engine.
另外，这款车还配备了一个小的“增程”内燃发动机。
In addition, the car is fitted with a small "range-extending" combustion engine.
另外，这款车还配备了一个小的“增程”内燃发动机。
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