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单词
stone canal
释义
stone canal
n.
(名词)
A calcareous duct in echinoderms that leads from the madreporite to a ring-shaped canal around the mouth.
石管:棘皮动物体内由筛板通向口部附近环状管道的钙质的导管
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更新时间:2025/5/31 21:12:27