英语词汇“placula”的意思、释义、用法解释及翻译-双龙斋书画网

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词汇	placula
释义	Definition of placula in English: placula noun ˈplakjʊlə Zoology A disc-shaped embryo, occurring as a developmental stage in urochordates and some sponges; a hypothetical primitive metazoan resembling this. Origin Late 19th century. From German Plakula from ancient Greek πλάκ-, πλάξ tablet, plate + German -ula. Definition of placula in US English: placula nounˈplakjʊlə Zoology A disc-shaped embryo, occurring as a developmental stage in urochordates and some sponges; a hypothetical primitive metazoan resembling this. Origin Late 19th century. From German Plakula from ancient Greek πλάκ-, πλάξ tablet, plate + German -ula.
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