This piston is being brought out, so we expect 0 the work to be negative, negative. And we start o V2 ut with zero volume. We end up with a volume p2 of V2, and the external pressure is constant to p2.

所以我们可以想象功是负的,开始的时候体积是,最终的容积是,外界的压力恒为。

麻省理工公开课 - 热力学与动力学课程节选

Mr. Trichet thinks that the Fed is running dangerous inflation risks ." by cutting rates too soon in the face of Wall Street pressure."

特里谢认为,美联储降息过快,将面临来自华尔街的压力而最终身陷囹圄“

斯坦福公开课 - 经济学课程节选