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.
每扇窗户都被涂上一层薄薄的迈拉(mylar)涂层，然后被放进烤炉内烘烤，以使这种防紫外线材料紧贴在玻璃上，取出任何视觉上的瑕疵。
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.
介绍用紫外分光光度计测定焦炉煤气中的焦油含量的实验方法、步骤以及在取样分析中的问题。
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