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单词
exosporium
释义
exosporium
[´ek·sǝ`spȯr·ē·ǝm]
BOTANY
The outer of two layers forming the wall of spores such as pollen and bacterial spores. Also known as exine.
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negative element
negative elongation
negative empathy
negative feedback
negative g
negative gene control
negative glow
negative-grid generator
negative-grid thyratron
negative impedance
negative-impedance repeater
negative indication
negative integer
negative interference
negative ion
negative-ion vacancy
negative landform
negative lens
negative logic
negative meniscus lens
negative mirror
negative modulation
negative movement
negative nodal points
negative part
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更新时间:2026/10/3 5:03:56