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用PSCAD搭建的微电网模型 可用来进行微电网，可借此模型分析微电网电压闪变与波动、频率偏差以及谐波等电能质量问题 (Built using PSCAD microgrid model can be used for micro-grid, you can take this model and micro-grid voltage flicker fluctuations, harmonics, frequency deviation and power quality problems)

说明：  solidworks学习笔记，帮助soloidworks入门学习者，了解基本的操作，快速掌握一些入门技巧(materials for learning solidworks 2016)

从多层树中取得偶数生成列，取得动态目标值的个数，从两个不同的树中，提取第二个树中独有的元素（和第一个树的元素不同的元素），并计算其和。(Generated columns to obtain an even number, the target value obtained from the dynamic multi-tree, from two different tree, extracts a second element that is unique in the tree (a tree of elements and different elements), and and calculate its.)

快捷标注多段线点号坐标，快捷查看封闭区域面积，单位亩、平方米等，加载lsp至cad即可使用(Quick Note polyline dot coordinates, quick check enclosed area of ​ ​ the unit acres, square, etc., can be used to load lsp to cad)

coredraw12快速入门视频教程，手把手交你学平面设计，共分九部分 (Coredraw12 started quickly video tutorials, intended to pay you learn graphic design, consists of nine parts)

cass图层管理一个快速打开关闭图层的小插件很实用(cass layer management a quick opening and closing very practical small plug layer)

Autocad VBA初级教程，很好的学习教程(Autocad VBA Basic Tutorial)

说明：  此程序使用LISP 变形语言scheme写的，分属于scheme的PLAI。 包括了parse方法，interp方法，有助于理解compiler的最基本思想。(This scheme uses the language written in LISP deformation, belonging scheme of the PLAI. Including the parse method, interp method to help understand the compiler' s basic ideas.)

在你选择的矩形中建立一个坐标网格，网格中含有坐标轴和面积

matlab程序资料请大家指教，辛苦大家啦(matlab program information, please advise, hard everyone!)