单词：central cell
central cell的用法和样例：
例句
- Young anthers are composed of a protoderm and a central cell mass in early July.七月上旬，幼花药，由原始表层和中央细胞团组成。
- The most prominent sign of degeneration is that the central cell nucleus produced nuclear vacuoles.没有受精的中央细胞退化时最显著的特点是细胞核产生核膜囊泡。
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