0.8Nj+1.2Np=2 ---- -1.2Nj=0.8Np Np:Nj=-3:2
so 0.8Nj:1.2Np=-4:9
the answer is negative, so the number in the problem must be wrong. But I think it is the correct way to solve the problem.
注:所有没有SA地题表示同意作者的答案
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