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nropt,full ! 用牛顿-拉普拉斯方程求解 Yc\;`C
nlgeom,on ! 打开大变形选项 ~vaV=})
autot,on ! 打开自动时间步 L suc*Ps
lnsrch,on !自动线性搜索 nG{jx_{`
pred,on !打开预测求解器 g4%x7#vz0
nsub,20 RQ9T<t42
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