To change a reference point from this point here being zero instead of this point here being zero.

这样就得到了,开尔文温标。

麻省理工公开课 - 热力学与动力学课程节选

And our other reference point is the triple point of water - reference points become zero Kelvin, absolute zero, and the triple point.

而使用绝对零度,它与压强无关,是最低的温度，另一个参考点是水的三相点。

麻省理工公开课 - 热力学与动力学课程节选