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齿羊齿类
释义
齿羊齿类
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理学
古植物学
释
odontopterids
齿羊齿类
一类常见于晚石炭世至早二叠世的种子蕨类植物,以小羽片基部下延,全缘或具裂齿,扇状脉,叶轴二歧分叉为主要形态特征。
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accident investigation report
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accidents of nuclear power plant
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accident-tolerant fuel
A.C.circuit
AC circuit
A. C. Clairaut
A.-C. Clairaut
A.-C. Clairaut (1713—1765)
acclimation
acclimation of fish to low temperature
acclimation transplanting
acclimatization
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