英语词汇embryo sac怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	embryo sac
释义	embryo sac 简明释义 [植] 胚囊网络释义 1 [植]?胚囊胚珠的发育(2) 胚囊的结构胚囊(embryo sac)：是被子植物的雌配子体，由卵细胞、助细胞、 (embryo胚囊(embryo-sac)：是被子植物的雌配子体，由卵细胞、助细胞、极核和反足细... 短语 1 embryo sac mother cell 大孢子母细胞 ; 植胚囊母细胞 2 embryo sac haustorium 胚囊吸器 3 embryo sac nucleus 胚囊核双语例句 1 The mature embryo sac has seven cells. 成熟胚囊内具七个细胞。 2 How does macrospore developed to embryo sac? 大孢子如何发育成胚囊？ 3 All nucellar cells disappear, when an embryo sac is ripe. 属薄珠心，胚囊形成时珠心细胞全部消失。同近义词 [植]胚囊 megaspore??/??gastrula
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