7[2]Lenau T, Nielsen L H, Alting L.Design for Pressure Die Casting-A DFM Example[J].The international Journal of Advanced Manufacturing Technology,1991,(7):141～154.
8[3]Ravi B.Knowledge-Based Casting Design[C]. 62th World Foundry Congress, paper No.17,4月,23～26,1996,2～12.
9[4]Biddanda B, Kadidal M and Billo R E. Development of intelligent castability and cost estimation system[J]. International Journal of Production Research, 1998,36(2):57～568.
10[5]Chung J C H, Cook R L, Patel D and Simmons M K. Feature-Based Geomtry Construction for Geometric Reasoning[C].Proceedings of ASME Computers in Engineering Conference and Exibition, San Francisco, 1988,(7):497～504.
