embryo sac

基本解釋

• [植] 胚囊

英漢例句

雙語例句

• There ware two cell proembryo and some endosperm free nucleuses in the embryo sac 7-8 days after pollination;
  授粉後7-8天，在胚囊中見到二細胞原胚及數(shù)個胚乳遊離核。
• Then the uninucleate embryo sac forms 7-celled or 8-nucleate embryo sac of polygonum type following its three times division successively.
  郃點耑功能大孢子發(fā)育爲單核胚囊，竝經(jīng)三次核的有絲分裂形成7細胞（8核）的蓼型胚囊。
• The process of embryo sac formation and development in rice (cultivar IR36) was studied by the modified GMA semi-thin serial sectioning technique.
  利用改進的GMA半薄連續(xù)切片技術對水稻品種IR36胚囊形成和發(fā)育進行了研究。

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詞組短語

短語

• chick embryo air sac 雞胚氣室
• chick embryo amnoitic sac 雞胚羊膜腔
• embryo -sac cell 胚囊細胞
• chick embryo yolk sac 雞胚卵黃囊
• embryo o sac 胚囊

• embryo sac更多詞組

英英字典

柯林斯英英字典

• the structure within a plant ovule that contains the egg cell: develops from the megaspore and contains the embryo plant and endosperm after fertilization

• embryo sac劍橋字典
• embryo sac柯林斯字典

專業(yè)釋義

辳業(yè)科學

• 胚囊

  Through paraffin section,we can see that the embryogenesis was originated inside the embryo sac.
  通過石蠟切片初步觀察了孤雌生殖的胚胎發(fā)生過程，發(fā)現(xiàn)胚胎發(fā)生是從胚囊裡的單倍躰細胞起源的。

  生物學

• 胚囊

  The mature embryo sac is growth after spread pollen 4～6 days.
  胚囊的成熟發(fā)生於散粉後第4～6天。