When Freon goes out of the inner circuit, its temperature is measured by temperature sensor 5.

当氟利昂的内部电路，其温度由温度传感器测量5。

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Before it comes into the building inner circuit, Freon temperature is measured by temperature sensor 4.

之前进入建筑内部电路，氟利昂温度由温度传感器测量4。

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After leaving the air pump this heat-transfer medium goes into the system inner circuit through Four-way valve 8 which is inside the building.

离开气泵后传热介质进入系统内部电路通过四通阀8在这座建筑。

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