projective cover meaning in Chinese

射影覆盖

By using the projective covering method and projective covering probability , fractal and multifractal dimensions of different types of landform sueface above are computed . results show that all the studied landform surface are not simple fractals , but multi - range scaling fractals , and the fractal dimensions increase with the landform type from basin to mid - low mountain and high mountain . nevertheless , different type landscapes perform different dq - q curve shapes . which the dq value has the widest range in the high mountain type , the second one is the mid - low mountain type , and then the basin type
对不同时段地震形变场图象多重分形特征的研究表明，震源区及近震源区强震前垂直形变图象都出现信息维降低，多重分形谱曲线dq变陡，值域范围变宽的特征，说明在强震前地壳垂直形变出现了局部化、不均匀性增强的行为，这些对地震预报都有重要的实际意义。