请帮忙解决一下,毕业设计做煤焦油初步分离(用pro2模拟 ...? *** reading pro/ii database project user problem date *** problem solution begins feed flash begins feed flash complete unit 1 begins - 'f1 ' unit 1 solved unit 4 begins - 't1 ' *** error *** unit 4, 't1' - zero liquid rate encountered on tray 1. unit 4 not solved *** problem solution not reached *** run completed - case not solved *** this run used 10.25 pro/ii simulation units *** run statistics started 12:00:48 05/28/09 1 error finished 12:00:48 05/28/09 no warnings run times no messages interactive 0 min, 0.00 sec calculations 0 min, 0.14 sec total 0 min, 0.14 sec查看更多