为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
人类历史就是一个同自然灾害的斗争史.在中国历史上,元朝是自然灾害较为频繁的时期,与此同时元朝在建立过程中进行了大规模的统一战争.在这一过程中造成了大量的人员伤亡和财
The large-scale Yangla copper deposit,located in the central part of the Sanjiang Tethys polymetallic belt,is structurally controlled by the Jinsha River Fault
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
The Bangong Lake-Nujiang River metallogenic belt is located between the Qiangtang Block and Lhasa Block,and the Duolong ore concentration area is located in the
Inside the Alaska Indian Arts center in Haines, Alaska, the smell of cedar hangs heavy in the air. Clunks1, whacks2,and scraping noises punctuate the redolence3