Because part of moister air in the lamp flows very slow and temperature of part of lamp cover and reflector is low, the fog forms on the lamp cover and reflector easily.

本文从热分析的角度，研究了由于车灯内部局部湿空气流动缓慢以及车灯配光镜和反射镜部分区域温度较低引起的结雾问题，分析了各种典型车灯中存在雾气问题的形成原因。

Light a check leak lamp, hold the air conduit on the halogen lamp, be pipe orifice close to system ooze, the flame color becomes royal blue, the scilicet marks to here have a great deal of leakage.

点燃检漏灯，手持卤素灯上的空气管，当管口靠近系统渗漏处时，火焰颜色变为紫蓝色，即表明此处有大量泄漏。