5Wang C W, Gao W and Wang X R. Theory, Experiment and Application of Virtual Reality[M]. Beijing: Tsinghua University Press, 1996: 13-15.
6Weidong Liu, Jianhna Liu, Ruxin Ning. Unified dimension and tolerance modeling for mechanical precision predicting [J]. International Journal of Advanced Manufacturing Technique, 2011, 57:307-323.
7Vikalp Mishra, Krishnan Suresh. A dual-representation strategy for the virtual assembly of thin deformable objects[J]. Virtual Reality, 2012, 16:3-14.
10Davide Manca, Sara Brambilla, Simone Colombo. Bridging between .Virtual Reality and accident simulation for training of process-industry operators[J]. Advances in Engineering Software 2013, 55:1-9.