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双受精作用
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双受精作用
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double fertilization
双受精作用
雄配子体形成的两个精子,一个与卵细胞融合形成二倍体的合子,另一个与中央细胞的极核融合形成初生胚乳核的现象。
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Outlines Integrated Development of Yangtze River Delta
Outlines of Agriculture
Outlines of Historic Events During the Reigns of Emperors Gaozong and Xiaozong
Outlines of History of the Imperial Song
Outlines of History under the Reigns of Emperors Guangzong and Ningzong of Song
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