In DE bottom of the concrete caisson lies a heat exchanger, a liquid filled winding tube, like a reverse underfloor heating system.
在混凝土沉箱的底部装置有一个热交换器，交换器内是充满液体的缠绕管，就像反向地暖系统。
In DE bottom of the concrete caisson lies a heat exchanger, a liquid filled winding tube, like a reverse underfloor heating system.
在混凝土沉箱的底部装置有一个热交换器，交换器内是充满液体的缠绕管，就像反向地暖系统。
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