At the same time, the rapid development of Internet/Intranet (Net bandwidth is now available M bps level, and even reached G bps level) provides the possibility of the application of the collaborative design.

• 同时,Internet/Intranet的飞速发展(目前网络的可用带宽是M bps级,甚至达到G bps级)也为实现协同设计并广泛应用成为可能。