The Tianshan basalts may result from a mantle plume.天山玄武岩可能是产生于地幔柱头.The basalts were intruded by numerous silica dykes, some of which terminate in the sedimentary layers.玄武岩被无数的二氧化硅矿脉侵入, 其中一些终止于沉积岩层.Yingcheng group'...
The technology of CAGD has been mature during thirty years'development.CAGD技术经过了三十多年的发展,已经比较成熟.Bezier curves have been widely applied to CAGD, and deeper study has been made.Bezier曲线已广泛应用在CAGD上, 其理论研究也更加深入.Shape mod...