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单词 blastodisc
释义 blas·to·disc
noun
also blas·to·disk \ˈ ̷ ̷ ̷ ̷+ˌ-\
Etymology: blast- + disc, disk
: the embryo-forming portion of a megalecithal egg with discoidal cleavage, usually appearing as a small disc on the upper surface of the yolk mass — called also germinal disc; see egg illustration
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更新时间:2024/9/22 7:02:35