The concept of heat threshold is brought forward for the melting process of radioactive source with constant heat rate.
针对恒释热率热源接触熔化，提出了热量阈值的概念。
Water source heat pump (WSHP) replaces cooling towers with underground constant temperature water, and has the characteristics of high efficiency energy-saving.
水源热泵用地下恒温水源代替冷却塔，具有高效节能的特性。
Water source heat pump (WSHP) replaces cooling towers with underground constant temperature water, and has the characteristics of high efficiency energy-saving.
水源热泵用地下恒温水源代替冷却塔，具有高效节能的特性。
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