Research situation of eco-design is analyzed,and then thoughts and methods of eco-design are discused.The eco-design includes packaging modularization,demateria
Based on the necessity of three dimensional modeling with computer in teaching reform,this paper is the summarization of reform practice of teaching engineering drawing in our institute.The teaching r
Elbow draft-tubes are widely used in largeand medium-sized hydropower stations in many countries.During the application,handling the somatotype of elbow tubes h
Hybrid models derived from rotational solids like cylinders, cones and spheres were implemented on CATIA software. Firstly, make the isosceles triangular prism,