被囊 [
bèi náng]
{动} tunic
- 被囊类动物的一个小目。
a small family of tunicates in the class Thaliacea. - 卵母细胞外有被囊细胞,生殖腺发育可分为4个时期。
The oocytes are covered with test cells and the gonadal development can be divided into 4 stages. - 幼形海鞘小的透明动物,属于尾索动物亚门(被囊类)而且发现于海洋的浮游生物;幼形纲。
larvaceans Small transparent animals belonging to the Subphylum Urochordata (tunicates) and found in marine plankton; Class Larvacea.
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