Most torches work on two batteries.
大多数电筒要用两节电池。
The lamp is powered by two small batteries.
这盏灯是由两块小电池供电的。
The main motive power comes from two large batteries. The diesel is merely a backup.
新车头的动力主要来自两部大型电池，柴油机仅作为后备。
装入两节新电池。
Most important of all, it can transfer the energy between two different batteries.
最重要的是，它能在两个不同的电池之间传送能量。
Backup power has two solutions, supercapacitor and batteries.
后备电源有两种解决方案：超级电容器和电池。
You can use either two AA batteries or a DC connection for the power supply.
你可以使用两节AA电池或电源为直流连接。
You can use either two AA batteries or a DC connection for the power supply.
你可以使用两节AA电池或电源为直流连接。
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