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megasporangium
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megasporangium
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。
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engineering risk management
Engineering Rock Mechanics
engineering sand fixation
engineering sediment
engineering seismic data processing and interpretation
engineering seismic prospecting
engineering seismograph
engineering settlement audit
engineering simulation
engineering slag mud
engineering slope
engineering spillover effect
engineering statistics
engineering structural analysis
engineering Structural performance
engineering structure
engineering structure test
Engineering support
engineering surveying
engineering survey of missile test site
engineering survey results database
engineering synergism
engineering system breakdown
engineering system outlook
engineering technical management
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更新时间:2026/3/7 15:12:39