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1.概述高纯度无应变的铂在 T>0℃时满足下列方程:R_T=R_0(1+AT+BT~2) (1)式中:T 是温度,用℃表示;R_0是0℃时温度计的电阻;R_T 是温度为 T 时的温度计电阻;A 和 B 是常数,与金属纯度和接近无应变态时的温度有关。在工作中,分别取 A=3.985×
1. Overview High-purity, strain-free platinum satisfies the following equation at T> 0 ° C: R_T = R_0 (1 + AT + BT ~ 2) where T is the temperature in ° C and R_0 is 0 ° C Thermometer resistance; R_T is the thermometer resistance at temperature T; A and B are constants that are related to the purity of the metal and the temperature at which the strain is near zero. In the work, take A = 3.985 ×