西门子S7的几个编程的实例-scl，可以看看，很有帮助的-Siemens S7 several programming examples-scl, you can see, very helpful

编程实现电力系统短路电流计算以及潮流分析实例-Programming calculation of power system short-circuit current, as well as examples of the trend analysis

pb9树形控件实例编程解析9利用数据窗口进行数据检索树形显示）-pb9 instance of the control program parsing tree data window 9 for data retrieval using a tree display)

射线追踪，佐普利兹求解反射系数，合成地震记录，实现常规动校正，实现无拉伸动校正。程序简单，内附成果图。是地震处理基础编程实例，不可多得。建议学习参考，不得提交研究生课程作业。-Ray tracing, the reflection coefficient solving Zopp Leeds, synthetic seismograms, achieve conventional NMO, NMO-free stretch. Seismic processing infrastructure p