Recessed-light fixtures are another air-leakagesource because many designs require some airflow to prevent them from overheating.
藏灯是另外一个漏风的地方,因为许多设计师都通过这样的设计促进空气流动避免灯光设备出现过热。
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The means of sealing by nitrogen aerating and local forced ventilation are used for the leakagesource points so as to reduce the explosion class in the gas zones.
Uncertainties in the occurrence of the leakage, the intensity of leakagesource, and the diffusion model in the process of the risk assessment of urban gas leakage are discussed.