The north - eastern structural zones which become intensity from the western part to the eastern one in gansu show a influence of marginal - west pacific indosinian - yanshan tectonic - magmatic belt on the western part of china ' s continent , and not only a important regional metallization had developed but also early - formed minerals were intense changed and enriched with the tectonic - magmatic activity 甘肃境内由西向东增强的北东向构造带,是我国东部滨西太平洋印支-燕山期构造岩浆活动带向大陆西部的延伸表现;伴随该期构造-岩浆活动,区内发生了重要的区域性成矿作用,并使处于该期构造活动带的先期金属矿产遭受了较强的叠加与再生改造。
Finally , aimed at laminated object manufacturing ( lom ) machine which is widely applied in domestic market , a new technique for covering lom prototype with special coating spraying is put forward , the problem on metallization of lom prototype is resolved by means of rapid electroless plating copper , a rapid edm electrode fabrication technology based on lom is established 最后,针对目前国内市场应用较普遍的分层实体制造( lom )快速成型设备,提出了基于特殊涂料喷涂法的lom纸质原型封闭处理新技术,通过快速化学镀铜解决了lom纸质原型导电化的难题,建立了基于lom纸质原型快速制造电加工电极的工艺。