单词 ptyalin 释义 ptyalin Physiol. Chem.|pt-, taln|[f. Gr. - spittle, saliva + -in2.]An amylolytic ferment in saliva, discovered by Leuchs, 1831.1845G. E. Day tr. Simon's Anim. Chem. I. 39 Ptyalin and pyin may be regarded as water-extracts of saliva and...