In this case, recharge the batteries or use the DC coupler.
在这种情况下，重新给电池充电或使用电源适配器。
In order to achieve power steering function in fuel cell bus, an electrohydraulic system is proposed, where the pump is directly driven by a DC motor through an axis coupler.
为了实现燃料电池电动客车的动力转向功能，提出了直流电机通过联轴机构直接驱动油泵的电动液压式动力转向系统。
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