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帽状体的英文

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"帽状体"怎么读用"帽状体"造句

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  • [植物学] calyptra

例句与用法

  • The second leaf takes place at the basal part of the first leaf and originates from the shoot apex cells when the first leaf pierces the calyptra
    第一叶突出帽状体之后,由第一叶基部保留下来的茎干顶端细胞产生第二叶。
  • 2 . sperm ultrastructure the sperm is nonflagellated and composed of a main body in which including nucleus n apical cap and a little cytoplasm and a single spike extending from the convex surface of the apical cap , which consists of about twenty radial fibrillae on which exhibiting periodic cross - striations . the concave surface of the apical cap surrounds the little cytoplasm which is highly condensed and has n ' t any organella and sperm nucleus , which is uncondensed and composed of filamentous materials and many membrane - bound vesicles
    外形呈图钉样,由主体部和棘突组成,主体部包括帽状体、细胞质带和精核。帽状体由约20根辐射状排列的纤丝组成,纤丝具横纹。其凸面延伸成棘突,棘突内纤丝是帽状体内纤丝的延续,亦具横纹。
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