The article introduces the test method and the steps to determine the tar content in the coal gas of coke oven by UV spectrophotometer, and the analytical problems. 介紹用紫外分光光度計測定焦?fàn)t煤氣中的焦油含量的實驗方法、步驟以及在取樣分析中的問題。
Each window also gets coated with a thin Mylar film that and is then baked in an oven that stretches the UV-retarding material tightly against the glass, removing any visible imperfections. 每扇窗戶都被涂上一層薄薄的邁拉（mylar）涂層，然后被放進(jìn)烤爐內(nèi)烘烤，以使這種防紫外線材料緊貼在玻璃上，取出任何視覺上的瑕疵。