1)back pouring,补浇注2)liquid metal welding,浇注补焊3)Gating and feeding system,浇注系统补缩4)casting rigid compensation method,浇注刚性补偿法5)liquid metal welding,熔焊;浇注补焊6)Bottom Gating-feeding System,底注浇注补缩系统
用法和例句
A good result is gotten when acasting rigid compensation method is used to make a special asymmetrical optical element,of which the thickness ratio of its center and edge is2.
