请输入您要查询的字词:
单词
大孢子囊
释义
大孢子囊
Encyclopedia
理学
〔植物形态与结构〕
释
megasporangium
大孢子囊
孢子体进行无性生殖的结构。存在于部分石松类植物(Lycophytes)即水韭科(Isoetaceae)、卷柏科(Selageinellaceae),水生蕨类植物(Ferns)即蘋科(Marsileaceae)、槐叶蘋科(Salviniaceae),以及所有种子植物(spermatophytes)的成熟孢子体上。
Biology
macrosporangium
大孢子囊
随便看
principal measure
principal minimum
principal minor
principal minor array
principal minor determinant
principal module
principal moment
principal moment of inertia
principal net of a mapping
principal net of the flow
principal neutral point
principal nilpotent orbit
principal norm
principal normal
principal normal complex
principal normal form
principal normal line
principal normal plane
principal normal section
principal normal surface
principal normal vector
principal number
principal nutation
principal object
principal offender
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2025/12/30 12:44:23