radial canal

短语

词形变化

radial canals 复数 radial canals

释义与例句

n.
  1. 1.

    any of the numerous minute canals lined with choanocytes which radiate from the paragastric cavity in some sponges and end just below the surface of the sponge

  2. 2.

    a tube extending outward along each ambulacral area from the circumoral canal in most echinoderms

  3. 3.

    any of the canals extending through the substance of the umbrella from the gastric cavity to the marginal circular canal in jellyfish