求助各位大神，workbench中出现这个问题怎么解决？
浏览：4047 回答：6
Preconditioned conjugate gradient solver error level 1. Possibly, the
model is unconstrained or additional iterations may be needed. Try
running setting the multiplier MULT on the EQSLV command to greater
than 1.0 (but less than 3.0).
CAE_dream 
