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......

Field studies were conducted to determine the dissipation and movement of metribuzin and metolachlor applied at conventi......

本文采用高效液相色谱法,使用Diamonsil C18 250mm×4.6mm色谱柱,以甲醇和水(80:20)为流动相,以二极管阵列检测器在230nm处对异·......