这个词是什么意思？
A superorder of marine CRUSTACEA, free swimming in the larval state, but permanently fixed as adults. There are some 800 described species, grouped in several genera, and comprising of two major orders of barnacles: stalked (Pedunculata) and sessile (Sessilia).
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D001468 · MeSH 2026。
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