du=dq+dw So our first law, du is dq plus dw.
热力学第一定律。
dU=dq+dw Well from the first law, du is equal to dq plus dw, and I wrote down everything I knew at the beginning here.
第一定律“,前面我们已经,看到了。
B + A would be--First draw B and from there you draw A.
+ A 就是先画矢量 B,然后再画矢量 A
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