"I know I want to be an engineer because I like building things to help solve world problems," says Du.
“我知道我想成为一名工程师,因为我喜欢制造东西来帮助解决世界问题。”杜说。
Why does Du want to be an engineer in the future?
为什么杜将来想成为一名工程师?
Mr. Du said I could be a good example to my classmates.
杜老师说我是同学们的好榜样。
dU=CvdT So du is still going to be equal to Cv dT, and we're still going to be able to use the first law, all these things don't matter where the path is.
于是,第一定律也依旧成立,这些关系都与路径无关。
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