热力学三个基本定律的表述繁多，但其前提常常是正温度条件下孤立系统的结论，鲜见有关于负温度系统下的有关表述。
It has many representations on the three basic laws of thermodynamics, but their presuppositions are often conclusions under the positive temperature and the isolated system.
以负温度系数热敏电阻为核心器件设计了多通道高精度温度测量系统。
Based on negative temperature coefficient resistance (NTCR), a fine multiple channel temperature measurement system was designed.
分析了处于负温度状态系统的特征，并将其与薄凸透镜成像特征作类比，阐明了应用类比法讲授负温度状态的优越性。
The characteristics of negative temperature state system were discussed, and compared with the image-forming behavior of thin convex lens.
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