测量误差公式推导: dc da 巴 T dA=d(-gT=d(0.434ln=-0.434dm/T dc-0.434dT E T(-1T TIgT最大时,即(g′=0时误差最小, 算得IT=-0.34,7=36.8%,A=0.4347 测量误差公式推导: dA = d(-lgT) = d(-0.434lnT) = - 0.434dT/T d d = c A c A r d - 0.434d = = (-lg ) c T E c T T A= - lgT T lgT 最大时，即(TlgT) ′= 0 时误差最小, 算得 lgT= - 0.434 , T=36.8% , A = 0.434