The system function 30% what reasonable design, 20% what air conditioning unit, 50% what installation quality quality.
系统功能30%在于设计合理，20%在于空调机组质量，50%在于安装质量。
The system function 30% what reasonable design, 20% what air conditioning unit, 50% what installation quality quality.
系统功能30%在于设计合理，20%在于空调机组质量，50%在于安装质量。
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