其异极3沟或6沟型花粉与真双子叶植物的3沟花粉的相似是趋同演化的结果。
The similarity of its heteropolar 3- or 6-aperturate pollen to the 3-aperturate pollen of Eudicots might result from convergent evolution.
通过对广西某地高硅氧化锌矿矿物分析可知，矿物中的锌主要以硅锌矿和异极矿的形式存在。
According to the mineral analysis of high silicon zinc oxide ore from Guangxi province, most of zinc exists in matters of zinc silicate and calamine.
目的探讨异基因外周血造血干细胞移植在肠型和极重度骨髓型放射病救治中的作用和地位。
Objective To explore the clinical significance of allogeneic peripheral stem cell transplantation in the treatment of acute radiation sickness.
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