单词 petalostichous 释义 petalostichous, a. Zool.|ptlstks|[f. mod.L. Petalosticha, neut. pl. of petalostichus (f. Gr. - leaf + row) + -ous.]Having petaloid ambulacra; belonging to the division Petalosticha of Echinoids.{var l=document.getElementsByTagNa...