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单词
periblast
释义
periblast
[`per·ǝ´blast]
EMBRYOLOGY
The nucleated layer of cytoplasm that surrounds the blastodisk of an egg undergoing discoidal cleavage.
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umbilicus
umbo
umbonate
umbra
umbrella antenna
umbrella roof
Umbrept
Umbriel
Umkehr effect
Umklapp process
UMP
umpire
unaka
unakite
unambiguous name
unamplified back bias
unarmed
unary operation
unattended operation
unattended time
unavailable energy
unavoidable delay
unavoidable-delay allowance
unavoidable set of configurations
unbalanced cutter chain
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