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......

Multi-armed nanorods and nanobars of semiconductor selenium were simultaneously synthesized in the light of biomineraliz......

对沈阳市沈水湾污水处理厂的运行现状进行了概述，介绍了浮动填料生化法的工艺原理，通过对1号线浮动填料工艺和2号线活性污泥工艺运行......