在开尔文温标中，没有负的温度，数字后面没有表示度的圆圈符号，如水的冰点是273k，而不是273。

In the Kelvin scale, which has no negative figures, the symbol for degrees is not used after the number. So the freezing point of water is 273k, not 273 ~ K.

youdao

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 so now, instead of using these reference points for the Kelvin scale, we use the absolute zero, which isn't going to care what the pressure is.

就像理想气体温标,与气体的种类无关一样，具有普适性，在开尔文温标中。

麻省理工公开课 - 热力学与动力学课程节选

So, this temperature, this absolute zero here, which is absolute zero on the Kelvin scale.

在负无穷处，现在把绝对零度定义为，开尔文温标中的0度。

麻省理工公开课 - 热力学与动力学课程节选