HTML_EDITOR Intro Page true true Designed by Fu-Kwun Hwang http://www.phy.ntnu.edu.tw/ntnujava/ ]]> 25 true VARIABLE_EDITOR coordinate true true range double xmin double xmax double ymin double ymax double t double dt double size double size1 double size12 double size2 double stroke double show boolean level int showv boolean showe boolean double VARIABLE_EDITOR basic true true x1 double y1 double x2 double y2 double zero double x0 double xp double [4] y0 double yp double [4] nx int ny int E double [nx][ny][5] E2 double [nx][ny][5] V double [nx][ny] V2 double [nx][ny] k double d double np int X double [np] Y double [np] done boolean [np] SC int KS double double VARIABLE_EDITOR language true true l_play String l_pause String l_reset String l_init String label String l_step String l_image String l_contour String l_color String colormode boolean l_showE String String CODE_EDITOR 初始值 true true ODE_EDITOR 演變式 true true t dt getF(i,X[i],Y[i],0) getF(i,X[i],Y[i],1) RungeKutta CODE_EDITOR 關係式 true true =np)_pause(); ]]> LIBRARY_EDITOR chinese true true LIBRARY_EDITOR playpause true true LIBRARY_EDITOR coloraction true true LIBRARY_EDITOR calF true true 0 || yymax){ SC++; done[i]=true; return 0.; } fx=(x-x1)/(r12*Math.sqrt(r12))-(x-x2)/(r22*Math.sqrt(r22)); fy=(y-y1)/(r12*Math.sqrt(r12))-(y-y2)/(r22*Math.sqrt(r22)); f=Math.sqrt(fx*fx+fy*fy)/KS; if(id==0)return fx/f; else return fy/f; } ]]> LIBRARY_EDITOR dragp true true -size)x1=-size; for(int i=0;i true Elements.Frame Frame true true Elements.Panel Panel Frame south Elements.Button reset Panel Elements.CheckBox CheckBoxEfield Panel Elements.CheckBox CheckBoxshow Panel Elements.CheckBox CheckBoxV Panel Elements.CheckBox CheckBoxcolor Panel true Elements.DrawingPanel DrawingPanel Frame center Elements.ZContourPlot ContourPlot DrawingPanel Elements.ZContourPlot ContourPlot2 DrawingPanel Elements.TraceSet TraceSet DrawingPanel Elements.Arrow Arrowvline DrawingPanel Elements.Arrow Arrowh1 DrawingPanel Elements.VectorField VectorField DrawingPanel Elements.VectorField VectorField2 DrawingPanel Elements.Particle Particle DrawingPanel Elements.Particle Particle2 DrawingPanel Elements.Line Line DrawingPanel Elements.Arrow Arrowh2 DrawingPanel Elements.Arrow Arrowh3 DrawingPanel