车辆运行速度。
The evident advantage is that the speed signal can easily be obtained on operating vehicle and no auxiliary connector is needed.
显著优点是，可方便地从整机上取得转速信号，而不需任何辅助连接件。
The evident advantage is that the speed signal can easily be obtained on operating vehicle and no auxiliary connector is needed.
显著优点是，可方便地从整机上取得转速信号，而不需任何辅助连接件。
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