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预备航天员选拔
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预备航天员选拔
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航天员选拔与训练
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astronaut candidate selection
预备航天员选拔
根据选拔标准,挑选出经过训练有望成为合格航天员的候选航天员的过程。是载人航天工程航天员队伍建设的起点和重要环节,直接影响航天员的训练质量和效率。
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positive ray function
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positive root system
positive rotation
positive school of criminology
positive selection
positive self-adjoint operator
positive self-regard
positive semi-definite
positive semi-definite form
positive semi definite Hermitian matrix
positive semi-definite Hermitian matrix
positive semi-definite kernel
positive semi definite matrix
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