triradiate pelvis[古生] 三射型腰带;翻译
triradiate slit三射缝
triradiate ridge三射脊
triradiate cartilage y形软骨
triradiate calcareous spicule三射石灰骨针
triradiate synchondrosis y形软骨
ADJ（形容词） having or consisting of three rays or radiating branches 三射线的; 有三射分支的 [biology]