According to the mathematicsrelation between thermal resistance and temperature, controlling the voltage and electric current of thermal resistance invariable to realize the constancy of temperature.
依据热电阻与温度的数学关系，通过控制热电阻的电压电流恒定实现温度恒定的控制。
2
Matrix to determine whether it is reflexive and symmetric, Discrete Mathematics in the binary relation.
判断矩阵是否是自反的，对称的，离散数学中的二元关系。
3
For the complicated relation between the malfunction omen and the malfunction reason, the traditional classical mathematics cannot exactly diagnose the airplane malfunctions.