由于液氦和液氢范围内物理的和机械方面研究在我国不断增长,低温温度的准确测量日益重要,特别是13.81K以下的温度测量,我国还缺乏一种足够方便和准确的次级温度计。在国际上,少数国家研究和使用了半导体锗温度计,有的已用来作为13.81K以下的温度标准。 由于半导体锗温度计在低温下电阻随温度的降低而迅速增加,因而有比较高的灵敏 Due to the growing research in physics and mechanics of liquid helium and liquid hydrogen in our country, the accurate measurement of low temperature is more and more important. Especially for the temperature measurement below 13.81K, there is still a lack of a convenient and accurate secondary thermometer in our country. Internationally, a few countries have studied and used semiconductor germanium thermometers, some of which have been used as temperature standards below 13.81K. As the semiconductor germanium thermometer at low temperature resistance decreases rapidly with the increase of temperature, which has a relatively high sensitivity