调查改造技术包括空气旁路控制冷却线圈，复位和挫折控制，提高暖通空调系统起止时间和节约外进气口。
Investigated retrofit techniques included air-bypass control on cooling coils, reset and setback control, improved HVAC system start-stop times and economizing on outside air intake.
可用灰色系统理论和方法建立灰色预测模型，预测未来一个活跃时段的起止时间。
By using the grey system theory and method, we built a grey prediction model to predict the start and end of an active time period in future.
可用灰色系统理论和方法建立灰色预测模型，预测未来一个活跃时段的起止时间。
By using the grey system theory and method, we built a grey prediction model to predict the start and end of an active time period in future.
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