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The National Mineral Resources Planning(2016-2020)issued by the Ministry of Land and Resources specifies national planning of 9copper mining area across the cou
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一诗词作为一种抒情的文学体裁,从《诗经》起,抒发深挚的感情便成为诗词的灵魂。审美心理学和社会学表明:一方面,人的感情都是在生理化、社会化、历史化的进程中发生和发展的
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我国经济发展进入新常态,是党中央综合分析世界经济长周期和我国发展阶段性特征及其相互作用作出的重大判断。习近平总书记在多个场合、多次会议对新常态作了系统论述和深刻
The effect of rare earths(La, Ce and Pr) addition on residual stress in iron coatings prepared by brush plating was investigated. The results showed that the ad
针对Q345B型钢表面结疤现象,从材料的化学成分、金相组织等方面进行了系统的分析与观察。分析结果表明:材料中的杂质含量高,轧制时产生内应力是导致表面结疤的主要原因。因此
The influence of heat treatment(T6) on the ambient temperature dry sliding wear behavior of the extruded AZ91 alloy treated with Y using a pin-on-disc apparatus
利用Dynaform有限元分析软件对大尺寸煤浆槽上下叶片进行了成形模拟。通过对成形极限图的分析,预测了成形缺陷,重点对成形后回弹量进行了研究。结果表明:通过FLD图能分析判断