将igs文件导入LT出现以下问题: sb}K%-
<+T\F;
*** Error (AITX_BLANKED_ENTS) *** >[|GC/C
8tLT'2+H#
The input file did not contain any supported non blanked independant entities. =mKfFeO.
~KAp\!,
Please check the documentation for a list of supported entities. HJfQ]p'nK2
%tzN@
请教各位是什么原因,如何解决?