But we've defined the enthalpy of those elements in their stable state at room temperature and pressure as zero, right?

但我们已经定义了这些,元素处于它们室温和常压下,最稳定的状态时的焓为零，对吧？

麻省理工公开课 - 热力学与动力学课程节选

What we define as zero is the enthalpy of every element in its natural state at room temperature and ambient pressure.

我们将零点定义为每种元素,在室温和正常大气压下,在其自然状态下的焓。

麻省理工公开课 - 热力学与动力学课程节选

And it's not hard to see how the heat of reaction at room temperature can be related to they heat of reaction at other temperatures.

知道室温下的反应热,如何与其他温度下的反应,热联系起来这点并不困难。

麻省理工公开课 - 热力学与动力学课程节选

Delta H of formation means the enthalpy of this compound minus the enthalpy of its constituent elements in their most stable state at room temperature and pressure.

生成焓就是这种组分,的焓减去它的所有组成元素,在室温和常压下处于,其最稳定的状态时的焓。

麻省理工公开课 - 热力学与动力学课程节选