将igs文件导入LT出现以下问题: Ak"m 85B
p2$P:!Y)
*** Error (AITX_BLANKED_ENTS) *** 3x'|]Ns
5S--'=fu+
The input file did not contain any supported non blanked independant entities. 7Da`
RuVGG)
Please check the documentation for a list of supported entities. _8_R 1s
[e}]}t8m
请教各位是什么原因,如何解决?