The pre Sinian metamorphic series in the Micang Mountain area on the northern margin of the Yangtze Craton consist of the Houhe Group Complex, the Bajiaoshu Gneiss Complex and the Huodiya Group.
扬子克拉通北缘米仓山地区前震旦纪变质岩系由后河岩群、八角树片麻杂岩和火地垭群组成。
For the areas of complex topography, especially mountain area, static is a non-linear hybrid optimization problem with the presence of multi-parameters and multi-extremes.
复杂地形，特别是山地条件下地震勘探中的大静校正问题是一个非线性的、具有多参数多极值的全局优化难题。
Because of complex landform and big difference of elevation, transmission line in mountain area has its characteristics which are different form transmission line in common landform.
山区送电线路因其地形复杂、相对高差大，在许多方面都具有不同于普通地形送电线路的特点，对设计工作和勘测工作有更高的要求。
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