从mf的帮助文档上看,MDL是一个cad与mf之间的接口:
Moldflow Design Link 4.0 (MDL 4.0) is a program add-on for Moldflow Plastics Insight (MPI) and Moldflow Plastics Adviser (MPA) that provides a geometry data translation interface to leading CAD systems.
Once you have installed MDL and its license key, a number of additional CAD file types will automatically become available on the CAD file import dialog in MPI or MPA.