镓熔点的测定及计算公式

Determination of the Melting Point of Gallium and Some Equations Concerned

测定了纯度为99.9999％的镓样品的熔点:t_(68)=29.7716_7℃±0.0002℃(1σ),其相应的热力学温度为27.7647_9℃。讨论了采用镓熔点后铂电阻温度计检定、分度中的有关问题,推导了由温度计在镓熔点的电阻比W_(?)计算α系数的公式,并进行了实验验证。

--The Melting point of a gallium sample with purity of 99.9999% is measured to be t63 = 29.7716,℃±0.0002℃(1σ), and the corresponding thermodynamic temperature 29.7647,℃. A new equation for calculating a from WGa is introduced.