改变文件的时间属性（创建时间、修改时间）。程序界面不是传统的矩形，而是椭圆形。-change the document properties (creation, modification time). Programming interfaces instead of the traditional rectangular, but oval.

In this paper, a new family of Cassinian wave-guides is proposed, simulating and calculation are finished with CST Microwave Studio that based on Finite Integral Technique (FIT), and some results are given. Electromagnetic field mode type of it

可以扑捉任意两点构成的矩形图片 按下ctl键点击你要扑捉的矩形的左上角和右下角(Can catch any consisting of two rectangular images Press the CTL click you want to catch the rectangle in the upper left corner and the lower right corner)

测绘专业中,空间直角坐标与大地坐标互相转换的VC源代码,(In the specialty of surveying and mapping, the space rectangular coordinate and geodetic coordinate transformation each other VC source code,)