质量不守恒 怎么解决? 做循环时出现这个警告warning block comp-04 is not in mass balance: mass inlet flow = 0.23359774e+03, mass outlet flow = 0.23205030e+03 relative difference = 0.66685794e-02 imbalance is due to a loose tear tolerance stream 27 tolerance = 0.10000000e-01 求解释 查看更多