单词 | 珠心 |
释义 | DEFINITIVE EXAMPLES 权威例句〔chalaza〕Botany The region of an ovule that is opposite the micropyle, where the integuments and nucellus are joined.【植物学】 合点:珠孔对面的胚珠内结合珠被和珠心的一个区域美国传统〔nucellus〕The central portion of an ovule in which the embryo sac develops; the megasporangium.珠心:胚珠的中心,胚芽囊在此发育;大孢子囊美国传统〔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 |
随便看 |
英汉汉英翻译词典包含1679246条英汉翻译词条,基本涵盖了全部常用英语单词及常用语的翻译及用法,是英语学习及翻译工作的有利工具。