| 释义 |
stone canal
stone canaln. A calcareous tube in echinoderms that leads from the madreporite to a ring-shaped canal around the mouth.stone canal
stone canal[′stōn kə‚nal] (invertebrate zoology) A canal in many echinoderms that has a more or less calcified wall and that leads from the madreporite to the ring vessel. |