According to the type of liquid in glass, metal well thermometer can be divided into two series: WNG series (mercury) and WNY series (organic liquid).

依据感温液的类型，金属套温度计分为两大系列：WNG系列(水银)和WNY系列(有机液体)。

youdao

And the temperature scale that turns out to be well-defined and ends up giving us the concept of an absolute zero is the ideal gas thermometer.

比如理想气体温标,它有精确的定义,并能引出绝对零度的概念,今天我们就先来谈谈它。

麻省理工公开课 - 热力学与动力学课程节选