In practical application of communicative power supply system, the problem often happens that after some time, the group of accumulators 'capacity becomes low, and can't achieve the demand of design.
通信电源系统在实际应用中，常出现蓄电池组在使用一段时间后容量不足，达不到设计要求的问题。
Communication is one of sign's basic functions. The communicative function endows great power to the sign world.
交际是符号的基本功能之一，符号的交际功能赋予了符号世界强大的生命力。
Communication is one of sign's basic functions. The communicative function endows great power to the sign world.
交际是符号的基本功能之一，符号的交际功能赋予了符号世界强大的生命力。
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