So, back to the original question about what MOD means. Well MOD is the ratio of the pitch circle diameter (PCD) to the number of teeth. DP for imperial gears is the number of teeth per one inch of pitch circle diameter. So whilst that may well answer the question, it doesn't really help appreciate the size of a gear.
doer. n. 1. a person or thing that does something or acts in a specified manner: a doer of good. 2. an active or energetic person. 3. a thriving animal, esp a horse. (Ëdu Ér). n.
DOE Dyspnea on exertion/exercise, see there. DOE . Abbreviation for dyspnea on exertion. doe. an adult female goat or deer; amongst deer it is especially common usage in the roe, fallow, muntjac and Chinese water deer species. In the larger species the term cow is used. Patient discussion about DOE. Q. does anyone know the range for childrens blood sugar? A.