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Landing light for airport runway - avoids damage when surrounding water freezes by allowing air retained in peripheral cavity to compress
Landing light for airport runway - avoids damage when surrounding water freezes by allowing air retained in peripheral cavity to compress
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机译:机场跑道着陆灯-通过使周围空腔中的空气压缩来避免周围水冻结时造成损坏
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摘要
The landing light for an airport runway has a sealed casing (1) which fits into a container (3) embedded in the runway itself. The casing (1) has a peripheral cavity (2) which is full of air when the container (3) is dry but which retains air when the cavity (2) fills up with water. When the water freezes, the air trapped in the cavity (2) compresses, allowing ice to form without exerting pressure on and damaging the casing (1).
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