Because of the action of an outer cover and a sealing gasket in the inside, the change cycle can be extended largely by the water in the tray of the jar body, and the water is not easy to vaporise.
由于外盖及其内侧的密封垫的作用，罐体托盘中的水可大大延长更换周期，水不易蒸发。
Because of the action of an outer cover and a sealing gasket in the inside, the change cycle can be extended largely by the water in the tray of the jar body, and the water is not easy to vaporise.
由于外盖及其内侧的密封垫的作用，罐体托盘中的水可大大延长更换周期，水不易蒸发。
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