The topological index F* is defined and obtained by the method of a non-dimensional unit calculation in which three matr......

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......

通过图像灰度与温度的相关性，可以精确地得到一些领域上难以被测量到的温度。提出了基于红外靶标的图像灰度与温度的相关性分析。以......

Oil cracking gas plays an important role in the resources of natural gas in the basins with high and over mature marine ......

As the Central Place Theory indicates, the centricity of a central city can influence the extension of its ser-vice. Sin......

The topological index F* is defined and obtained by the method of a non-dimensional unit calculation in which three matr......