说明：  有限元网格自动划分,对有限元分析有很大帮助,尤其是机械,等工科做设计不堪一击地二否极泰来 大起大落夺夺夺在大起大落在
(Automatic finite element mesh division of finite element analysis are very helpful, especially in machinery, such as engineering design to do a single blow to the Second Better capture capture capture ups and downs in the ups and downs in)