后备电源有两种解决方案：超级电容器和电池。
Backup power has two solutions, supercapacitor and batteries.
解决方案有两种模式，一是标准(PB24)和后备电池(PB 24 BB)。
The solution is available in two models-standard (PB24) and battery backup (PB24BB).
解决方案有两种模式，一是标准(PB24)和后备电池(PB 24 BB)。
The solution is available in two models-standard (PB24) and battery backup (PB24BB).
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