双语例句原声例句权威例句
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Of the gravitational potential energy...
重力势能的关系。
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This is the gravitational potential energy.
这是重力势能。
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Mhy You see? Mgy is gravitational potential energy.
你们看，是重力势能。
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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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