然后杠杆的自由端被慢慢举起，从而将壳体从窗格玻璃抬起。
A free end of the lever is then raised slowly in order to lift the casing from the pane.
为此，两个窗格玻璃密封通常由金属或玻璃的加入，使一热桥发生。
To this end, the two panes of glass are usually joined by metal or glass seals so that a thermal bridge occurs.
普通窗玻璃歪曲了一切的原因：它们被迅速压缩了炽热的两个热辊，生产虽便宜，但制作出的却是不均衡的窗格玻璃。
There's a reason old windowpanes distort everything: They were made by rapidly squeezing a sheet of red-hot glass between two hot rollers, which produced a cheap but uneven pane.
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