本文通过分析大空间展览建筑的火灾特性，引入了性能化防火设计方法在这类建筑中的应用。
This article introduced the application of performance-based fire-protection design approaches in large space exhibition buildings based on analyzing their fire characteristics.
尤其是在一些大空间、多粉尘、高湿度的建筑物中，传统的火灾探测器几乎不能正常工作。
Especially in the building that is big space, or full of dust, or high humidity, the traditional fire probes hardly can work regularly.
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.
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