多联式(VRV)空调系统是一种可以调节制冷剂流量的空调系统，可以减少无效能源的浪费，提高能源的利用率。
Varied refrigerant volume (VRV) air-conditioning system's refrigerant flow rate is adjustable, so it can reduce ineffective energy waste and improve energy efficiency.
缺点则是工作阶段状态的无效率使用可能会导致不良的效能。
The disadvantage is that inefficient use of session state can lead to poorer performance.
结果31例中，22例的疗效能够维持，或继续有所好转，占71％；9例的症状稍见加重，列为无效，占29％。
Results: Of total 31 cases, 22 cases (71%) can maintain their original status, and there were some exacerbation in the symptoms in the other 9 cases (29%).
结果31例中，22例的疗效能够维持，或继续有所好转，占71％；9例的症状稍见加重，列为无效，占29％。
Results: Of total 31 cases, 22 cases (71%) can maintain their original status, and there were some exacerbation in the symptoms in the other 9 cases (29%).
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