We describe the fractal analysis of three differently sized coal samples(0.350-0.833 mm,0.245-0.350 mm,and 0.198-0.245 m......

本研究采用拌粮法研究了不同浓度和粒径的硅藻土、沸石粉、蒙脱石和高岭土等四种惰性粉对嗜卷书虱的作用效果。研究结果表明,与其......