短語(yǔ)詞組短語(yǔ)cooling and heating heat -pump 制冷與供熱熱泵recycled -heating heat pump water heater 循環(huán)式熱泵熱水機(jī)direct -heating heat pump water heater 一次加熱式熱泵熱水機(jī) 返回 heating heat-pump