periostracum
/,peri'ɔstrәkәm/
中文翻译
n. (软体动物介壳的) 角质层
英文解释
n. A chitinous membrane covering the exterior of many
shells; -- called also epidermis.
相关词组
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[医] 蝉蜕
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[医] 蛇蜕