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采用直流磁控溅射方法制备膜厚为50,100,200,400,600nm的Nb薄膜，对薄膜的沉积速率、表面形貌、晶体结构进行了研究，并对其应力和择优......
从区域稳定性研究入手，以地壳，堤坝与地基三系统控制论为理论基础，系统总结了悬河研究领域中的最新成果和结论。提出了工程治理与环境......
