英语词汇“ectostracum”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ectostracum
释义	> as lemmas ectostracum ectostracum n. Brit. /ɛkˈtɒstrəkəm/ , U.S. /ɛkˈtɑstrəkəm/ the middle layer of the shell of a crustacean. ΚΠ 1880 T. H. Huxley Crayfish iv. 194 Immediately beneath the epiostracum, there is a zone..distinguished as the ectostracum. extracted from ecto-comb. form < as lemmas
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