matlab里面的parent属性什么意思在matlab里面输入一下命令,其中显示"Parent:173.0070",请问这个"Parent"和"173.x=1:0.1:10;y=sin(x);a=plot(x,y);get(a);DisplayName:''Annotation:[1x1 hg.Annotation]Color:[0 0 1]LineStyle:'-'LineWidth:0.5000...