1.具有低温上电和高温断电功能； 2.能够进行温度上限和温度下限设置，并且实时显示温度； 程序内以给出详细注释.-1. With a low temperature and high temperature power-off function 2. To carry out the minimum temperature and maximum temperature settings, and real-time display of temperature proces

用面积累加的方法求解积分函数的结果，可以自由的输入积分上下限，以及分割段数-The results accumulated by the area method for solving integral function, you can enter upper and lower limits of freedom points, and the number of divided segments