将igs文件导入LT出现以下问题: +RBX2$kB
+\R__tx;
*** Error (AITX_BLANKED_ENTS) *** e"(SlR
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The input file did not contain any supported non blanked independant entities. %,UTFuM`
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Please check the documentation for a list of supported entities. hLICu[LC?
po!bRk[4
请教各位是什么原因,如何解决?