Comprehensive evaluation of municipal water supply plants is a complicated system engineering that involves various aspects such as society, economy, and environment.
城市给水厂综合评价是一项很复杂的系统工程，涉及到社会、经济和环境等各个方面。
An engineering example of heat-supply using water-source heat pump of shallow groundwater is introduced. The economy of heat-supply with heat pump is analyzed.
介绍了采用浅层地下水的水源热泵供暖的工程实例，分析了热泵供暖的经济性。
An engineering example of heat-supply using water-source heat pump of shallow groundwater is introduced. The economy of heat-supply with heat pump is analyzed.
介绍了采用浅层地下水的水源热泵供暖的工程实例，分析了热泵供暖的经济性。
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