flame test apparatus是什么意思

用法例句

In order to observe burning flame in various blast furnaces and kilns, such as brick-kiln, cement-kiln,steel-making furnace, coke oven and boiler, flame-observing tubes have been developed.

为了观测到各种高沪和窑，如砖窑、水泥窑、炼钢炉、炼焦炉、锅炉等内部点火和燃烧的火焰，我们研制了火焰观测仪。