1.matlab画图 x1=[1.00E-06,2.00E-06,4.00E-06,9.00E-06,2.00E-05,4.00E-05,8.00E-05,2.00E-04,4.00E-04,7.00E-04, 2.00E-03,4.00E-03]; y1=[0.0735,0.073,0.068,0.0625,0.0583,0.0535,0.0472,0.041,0.034,0.026,0.019,0.01]; x2=[1.00E-06,2.10E-06,4.10E-06,9.90E-06,1.