Plain glass is transparent.

普通的白玻璃是透明的。

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Used for cutting, drilling and chamfering plain glass and triples glass.

用于平板玻璃、夹层玻璃的切割、钻孔、倒角。

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In interference experiments with Newton's ring, considered only is the interference of the air film formed between the convex lens and the plain glass.

普通物理实验中，牛顿环干涉实验只考虑在凸透镜与平面玻璃之间形成空气薄膜下的干涉现象。

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It must feel like he is crawling across an endless plain on broken glass, the mirage of eventual victory shimmering ever in the distance.

BBC: Romney fails to seal the deal on Super Tuesday