closed-circuit ground coupled heat pump
R22地源热泵机组单螺杆式压缩机循环性能研究 关键词： 单螺杆压缩机 地源热泵 循环性能 [gap=607]Key words: Single Screw Compressor; Closed-circuit Ground Coupled Heat Pump; Cycle performance
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closed-circuit ground coupled heat pump
闭路地耦合热泵
以上为机器翻译结果，长、整句建议使用 人工翻译 。