控制面板、电池充电指示器和速度计能协助保持不变的走动速度。
The control panel incorporates a battery charge indicator and a speed meter which assists in maintaining a constant walking speed.
每个充电位装有电流指示器，能正确的显示矿灯的充电情况。
Each charging place is equipped with a current indicator, which can show the charging situation correctly.
每个充电位装有电流指示器，能正确的显示矿灯的充电情况。
Each charging place is equipped with a current indicator, which can show the charging situation correctly.
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