将igs文件导入LT出现以下问题: ?gq',FFDq
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*** Error (AITX_BLANKED_ENTS) *** X_j=u1*5
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The input file did not contain any supported non blanked independant entities. ^/)!)=?
h`_@eax
Please check the documentation for a list of supported entities. l$i^e|*
K2W$I H:.
请教各位是什么原因,如何解决?