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单词 trachymedusae
释义

Trachymedusae


Tra`chy`me`du´sae


n. pl.1.(Zool.) A division of acalephs in which the development is direct from the eggs, without a hydroid stage. Some of the species are parasitic on other medusæ.

Trachymedusae


Trachymedusae

[¦tra·kē·mə′dü‚sē] (invertebrate zoology) A group of marine jellyfish, recognized as a separate order or as belonging to the order Trachylina whose tentacles have a solid core consisting of a single row of endodermal cells.
MedicalSeeTrachylina
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更新时间:2024/11/12 12:28:53