4Chen Xi, Wu huizhong, Zhu yaoqing, The architecture and key technology of an agent-based virtual prototyping[C]. Proceedings of Asian Simulation Conference; System Simulation and Scientific Computing, Shanghai, vol. 2, 2002, 661-666.
5Antonio G. et al., Virtual reality as a tool for verification of assembly and maintenance processes[J]. International Journal of Computers & Graphics, 1999, 23(3): 389-403.
6Liu Hong, Tang MingXi, John Hamilton Frazer, Supporting Learning in a Shared Design Environment[J]. Advantages in Engineering Software, 2001, 32(4): 285-293.
7GREENSPUN E Distributed computing with HTTP, XML, SOAP,and WSDL [EB/OL]. http://www.soapware.org/bdg, 2001-10-08.
8W3C Web services architecture [EB/OL].http://www.w3.org/TR/2002/WD-ws-arch-2002-1114/, 2002-11-14.
