所以也就是说，是没有影响的，我们把整个体积分割成，想象的小体积元。

So in other words, it doesn't matter we're dividing our volume up into imagined little volume elements.

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我们把体积分成小的体积元。

So we're going to divide the volume up.

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内容涉及到各种组织的体积分数、面积密度、长度密度等。

The content of the survey involved the volume density, surface and length densities.

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So for the reversible process, the work done is the integral under the pressure volume state function, the function of state.

对可逆过程，做的功,是压强体积态函数曲线下，的积分面积。

麻省理工公开课 - 热力学与动力学课程节选

V1 This first integral is zero V1 to V1, then I get minus p2 times V2 minus V1 or p2 times V1 minus V2. Again, 0 a positive number.

先保持体积为，对pdV积分1,然后对p2dV从V1到V2积分，第一部分积分为。

麻省理工公开课 - 热力学与动力学课程节选