珠心

汉英

网络释义

例句

释义:
全部全部,nucellusnucellus,kernelkernel
类别:全部全部,口语口语,书面语书面语,标题标题,技术技术
来源:全部全部,字典字典,网络网络
难度:全部全部,简单简单,中等中等,难难
1.
A minute structure in seed plants, containing the embryo sac and surrounded by the nucellus, that develops into a seed after fertilization.
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。
www.sfls.com.cn
2.
were filled with endosperms, the embryos began to develop quickly and continued until the ripening of the fruit.
当胚乳充满珠心组织时，胚开始迅速发育并—直持续到果实成熟。
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3.
A female gametophyte of the female gametophyte in the sporangium ovule is the heart of the beads.
产生雌配子的雌配子体在大孢子囊即胚珠的珠心处发育。
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4.
The tube nucleus disintegrates as the pollen tube penetrates the nucellus .
另外的粉管核会在花粉管穿过珠心时发生分裂。
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5.
integument A layer surrounding the nucellus in the ovules of gymnosperms and angiosperms.
是裸子植物和被子植物的胚珠中包裹珠心的结构。
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6.
Food materials may be stored in a special tissue derived from the nucellus , called the perisperm.
营养物质可以贮藏于由珠心产生的一种特殊组织，叫外胚乳。
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7.
In the second year, the resting pollen tube revives its activity in the nucellus towards the March.
第二年三月，休眠的花粉管在珠心内恢复活动，四月形成二个不等的雄配子。
journal.kib.ac.cn
8.
Main results are as follows: 1. The ovule was unitegmic, orthotropous and crassinucellate in Hickory.
主要研究结论如下：1、山核桃胚珠为直生胚珠，单珠被，厚珠心型。
paper.pet2008.cn
9.
Ultrastructural Study of Nucleus Transfer in Nucellus of Pennisetum squamulatum
非洲狼尾草珠心细胞核穿壁运动超微结构研究
service.ilib.cn
10.
Observation on Top Grafting of Tissue Culture Plants from Young Embryos of Hamlin Orange
哈姆林甜橙幼胚组培珠心植珠的高接观察
www.ilib.cn