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......

Several 6,8-dichloroquinolone analogues were synthesized from the key intermediate compound of 2,3,4,5-tetrachlorobenzen......

几 6,8-dichloroquinolone 类似物从 2,3,4,5-tetrachlorobenzene 羰基氯化物的关键中间的混合物被综合，它从 tetrachlorophthalic ......