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先驱
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先驱
Encyclopedia
理学
古生物学
释
progenitor
先驱
某一类群生物在其大规模繁盛之前就已经出现的少数代表。生命宏演化进程中分类单元的一种形式,它们往往拥有特殊的演化新质,能够突破重大灾变的冲击而幸存下来并进一步发展、壮大。
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group of binary numbers
group of boundaries
group of canonical transformations
group of classes
group of classes of algebras
group of coboundaries
group of cocycles
group of coefficients
group of collineations
group of comets
group of conformal transformations
group of congruence classes
group of congruence transformations
group of covering transformations
group of curves
group of cycles
group of death
group of diffeomorphisms
Group of Eight
Group of Experts on the Scientific Aspects of Marine Pollution
group of figures
group of finite order
group of finite rank
group of finite type
group of galaxies
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