Fluid design, in the cover of the battery set a one-way valve.

液设计，在电池的上盖中设置了一个单向的安全阀。

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Valve regulated lead acid battery monitoring and failure prediction are necessary.

阀控铅酸蓄电池需要维护测试和故障预测。

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Valve regulated lead acid battery monitoring and failure prediction are necessary.

阀控铅酸蓄电池需要维护测试和故障预测。

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