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近鸟龙
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近鸟龙
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理学
爬行纲(化石)
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近鸟龙
兽脚类恐龙中的一属。多数研究认为它属于伤齿龙类或者恐爪龙类,但也有研究认为它属于鸟类。
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ultra-scan
ultrascheme
ultra-sensitivity
ultrasensitivity
ultra-shallow junction ion implantation
ultrashort antenna
ultra short baseline localization
ultra short base line positioning
ultra short baseline positioning system
ultra short laser pulse
ultra-short laser pulse
ultrashort laser pulse
ultra short optical pulse width calibration
ultra-short-period binary
ultra-short-period B star
ultra-short-period Cepheid
ultrashort-period planet
ultra-short-period variable
ultrashort pulse
ultrashort pulse current electrochemical micromachining
ultrashort pulse laser
ultrashort pulse shaping
ultra-short-range projectile interception technology
ultra-short wave transmission system
ultrasil
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