Pollution source means a physical or chemical operating unit that emits air pollutants.

指排放空气污染物之物理或化学操作单元。

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Also, the proper design on the operating and controlling scheme of the system was carried to play its role as saving energy for the air source heat pump system to the greatest extent.

并对系统运行控制方案进行合理的设计，最大限度的发挥空气源热泵系统节能的优势。

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A general steady-state simulation model was presented for predicting the performance of air source heat pump unit in low ambient operating conditions.

本文利用已建立并通过实验验证的空气源热泵机组稳态仿真数学模型，对机组在新工况与常规工况下的低温稳态特性进行了计算机仿真。

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