本机旋转运动采用变频控制，在生产中可根据实际需要在一定的范围内调节最佳速度。
The machine USES inverter controlled rotary movement in the production can be based on the actual need for some adjustment within the optimal speed.
为保持对车辆的控制，驾驶人可选择和维持以低速档行车，并可轻踏煞车掣，调节速度。
To maintain control select and stay in a low gear and adjust speed with light pressure on the footbrake .
低速风洞实验要求对实验段的风速有严格的控制，要求风速调节范围宽，精度指标高，调节速度快。
Low speed wind tunnel experiment requires strict of the wind speed, which requires a wild range of wind speed, high precision, and quick adjustment.
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