//Math.random()*(tonum-fromnum))+fromnum;
double a =Tool.sTd((Math.random()*(80-50))+50);//50-80之间
System.out.println(a);
//tonum和fromnum是范围值
//Math.random()*(tonum-fromnum))+fromnum;
double a =Tool.sTd((Math.random()*(80-50))+50);//50-80之间
System.out.println(a);
//tonum和fromnum是范围值