在一个全尺寸的大空间火灾实验厅内，进行了不同补风口位置和补风口面积下的机械排烟试验。
The mechanical smoke exhaust experiments with different air-supplement conditions were conducted in a full-scale large space fire experimental hall.
文章分析了大空间建筑内机械排烟的要求，并在大空间火灾实验厅内进行了不同火源功率下的机械排烟试验。
The paper analyses the requirements for mechanical exhaust tests under different power done in the large space fire test hall.
分析了烟气在大空间建筑内的充填情况，得到不同火源下的烟气填充计算模型，并在大空间实验厅内进行了全尺寸油池火对比试验。
Analysis was made for smoke filling process in large space building, and some full scale pool fire tests for comparison were made in USTC large space experimental hall.
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