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理学
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孑遗
曾经分布广泛或比较广泛,且数量和种类均很多,但随着时间推移逐渐衰退,或在重大事件特别是灭绝事件打击之后遭受重创,只有少数个体和种类孤独地生存于个别地区,并有日趋灭绝之势的生物。生物宏演化进程中的分类单元型式。
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残余[物]
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three-reflector feed system
three-region pulse-taking method
Three Repetitions of the Yangguan Tune
three round bodies
three rounds of drum beating
three rules of mathematical manipulation in quantum mechanics
three rural left-behind groups
three safety education
three Saints of the East
three-satellite constellation
three-season grazing system
three seasons pasture
three sections of different body parts (branches,trunk,root)
Three-self Patriotic Movement Committee of Protestant Churches in China
Three-Self Patriotic Movement of the Protestant Churches in China
Three Sequences Calendar
three-series criterion
three-series theorem
three shaft testing machine
Three Shu Prefectures
threesider
three-side theatre
three-sigma rule
three signs of asphyxia
three simultaneous system of soil and water conservation
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