Song Y, Park S, Jee H,et al. 3D Welding and Milling-A Direct Approach for Fabrication of Injection Molds. The Solid Freeform Fabrication Symposium,Austin,1999是什么意思_Song Y, Park S, Jee H,et al. 3D Welding and Milling-A Direct Approach for Fabrication of Injection Molds. The Solid Freeform Fabrication Symposium,Austin,1999在线翻译_英语_读音_用法_例句