Of the gravitational potential energy...
重力势能的关系。
This is the gravitational potential energy.
这是重力势能。
Mhy You see? Mgy is gravitational potential energy.
你们看,是重力势能。
You know, if you want to measure the potential energy of something in a gravitational field, you have to define the zero somewhere, right, because it's arbitrary. You can set it anywhere you want. It's the same with enthalpy.
你知道,如果你想测量重力场,中某种东西的势能,你需要,在某处定义一个零点,对吧?,因为势能的值是任意的,你可以把它设定在。
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