精确测量低温下的微小温差是一个相当复杂的实际问题。当测定绝热热量器的热容量时必须保持高精度的恒温并测量辐射板与装有被研究物质的容器间的温差。在这些条件中,最重要的是热电偶电极的导热率,要测量通过它的热转移是有很大 Accurate measurement of small temperature differences at low temperatures is a rather complicated practical problem. When determining the heat capacity of an adiabatic calorimeter, a constant temperature of high accuracy must be maintained and the temperature difference between the plate and the container containing the substance under investigation must be measured. Among these conditions, the most important is the thermal conductivity of the thermocouple electrode, which is very large to measure the heat transfer through it