二次世界大战后,低温技术的广泛应用和深冷动力工程的发展方向有密切关系。首先是利用超导现象的低温输电线路以及各种动力设备。这些设备的特点是有很大的电流密度,从而导致在这些设备里有很强的磁场。因此,保证设备工况的温度测量仪,放入磁场后应保持示值不变。在任休情况下都必须做到磁场引起的修正量足够小, After the Second World War, the widespread application of cryogenic technology is closely related to the development direction of cryogenic power engineering. The first is the use of low-temperature superconducting transmission lines and a variety of power equipment. These devices are characterized by a large current density, resulting in a strong magnetic field in these devices. Therefore, to ensure that the temperature conditions of the instrument, placed in the magnetic field should remain unchanged. In any case must be done under magnetic field caused the correction is small enough,