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应急着陆区
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emergency landing zone
应急着陆区
弹箭回收时备选着陆区域。载人航天领域特指出现危及航天员生命安全或载人飞船出现不可修复故障的异常情况下,载人飞船返回舱需要紧急着陆的预选区域。
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degenerate polyhedron
degenerate positive semidefinite matrix
degenerate pressure
degenerate primer
degenerate problem
degenerate process
degenerate quadratic form
degenerate quadric
degenerate quantum gas
degenerate random variable
degenerate representation
degenerate semiconductor
degenerate series
degenerate series of representations
degenerate set
degenerate simplex
degenerate singular point
degenerate singular simplex
degenerate solution
degenerate star
degenerate state
degenerate stellar configuration
degenerate surface
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degenerate tree
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