计算组合数公式C(ele,sel)=A(ele,sel)/sel! 不用递归实现，放心使用-calculation formula portfolio C (ele, sel) = A (ele, sel) / sel! Recursive not achieved, the use of confidence

teqc生成那8个compact文件，注意不是compact2或compact3，可以快速画图，比qcview方便多了，又快有美观！至于compact文件我会另外上传！- TEQCFV Read and plot TEQC report files (fast view) TEQC is the Toolkit for GPS/GLONASS/SBAS Data used to solve many pre-processing problems with G

The PETSc - FEM package is a library and application suite oriented to the Finite Ele-ment Method based on PETSc.-The PETSc- FEM package is a library and application suite oriented to the Finite Ele-ment Method based on PETSc.