请输入您要查询的单词:

 

单词 胚囊
例句 DEFINITIVE EXAMPLES 权威例句〔emboly〕The formation of a gastrula from a blastula by invagination.内陷:囊胚翻转形成胚囊美国传统〔embryo sac〕The female gametophyte of a seed plant, within which the embryo develops.胚囊:种子植物的雌性配偶体,胚胎在其中发育美国传统〔embryonic membrane〕Any of the membranous structures closely associated with or surrounding a developing vertebrate embryo, including the amnion, chorion, allantois, and yolk sac.胚膜:任何与发育中的胚胎相关或包围胚胎的膜状结构,包括衣胞、绒膜胚囊、尿膜和卵黄囊美国传统〔ovule〕Botany A minute structure in seed plants, containing the embryo sac and surrounded by the nucellus, that develops into a seed after fertilization.【植物学】 胚珠:种子植物的一个小的结构,含有胚囊并被珠心所包围,施肥后长成种子美国传统〔polar nucleus〕Either of two nuclei located centrally in a flowering plant embryo sac that eventually fuse to form the endosperm nucleus.极核:位于一株开花植物的胚囊中央的两个细胞核的任一个,这两个细胞核最终融合而形成内胚乳细胞核美国传统〔synergid〕One of two small cells lying near the egg in the mature embryo sac of a flowering plant.助细胞:位于开花植物成熟胚囊的卵细胞周围的两个小细胞之一美国传统
随便看

 

英语例句辞典收录了559068条英语例句在线翻译词条,基本涵盖了全部常用单词及词组的例句翻译及用法,是英语学习的有利工具。

 

Copyright © 2000-2023 Newdu.com.com All Rights Reserved
更新时间:2024/11/13 15:09:35