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chalaza
[kəˈleɪzə] [kəˈleɪzə]

  • n. (植物) 合点;卵带;(细胞)卵黄系带

[ 复数 chalazae或chalazas ]

网络释义专业释义英英释义

  [植] 合点

达到子房内的胚珠时,从珠孔或合点Chalaza)进入胚珠内。花粉管的伸长速度随植物种类或因外界条件而不同。

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  系带

系带chalaza 温差电致冷原理及赝三元半导体致冷材料的性能THERMOELECTRIC REFRIGERATION AND PERFORMANCE OF PSEUDOTERNARY THERMOELECTRIC M...

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  [昆] 毛突

... 合蕊冠:gynostegium 合点;卵带;毛突chalaza 合成药物:synthetic drugs ...

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  卵带

... 合蕊冠:gynostegium 合点;卵带;毛突:chalaza 合成药物:synthetic drugs ...

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短语

chalaza secondary sac 合点次生囊

  • 合点 - 引用次数:8

    参考来源 - 喜树生殖生物学的研究
    卵黄系带
    毛突
    卵带
    卵带;毛突;合点

·2,447,543篇论文数据,部分数据来源于NoteExpress

chalaza [ kə'leizə ]

  • n.
    • basal part of a plant ovule opposite the micropyle; where integument and nucellus are joined
    • one of two spiral bands of tissue connecting the egg yolk to the enclosing membrane at either end of the shell

以上来源于: WordNet

 柯林斯英汉双解大词典 

chalaza /kəˈleɪzə/

  • 1. 

    N one of a pair of spiral threads of albumen holding the yolk of a bird's egg in position 卵黄系带

双语例句

  • With the embryo development, most of the endosperm degenerated, and the cells near chalaza entered the chalaza, digested it and further nourished the embryo.

    合点端的胚乳细胞则侵入合点珠心组织,为进一步发育提供营养

    youdao

  • When ovule orientation is orthotropous the chalaza corresponds to the point where the funicle is attached but in anatropous and campylotropous ovules the chalaza is some distance from the funicle .

    胚珠方向直生胚珠时,合连成一条直线,当胚珠是倒生胚珠或弯生胚珠时,合点和珠柄之间一定距离

    youdao

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