将igs文件导入LT出现以下问题: wKlCx
->&VbR)
*** Error (AITX_BLANKED_ENTS) *** kV3j}C"
mJ>99:W+
The input file did not contain any supported non blanked independant entities. E`n`#=xKR
!O6Is'%B
Please check the documentation for a list of supported entities. Vk_&W.~
"3|"rc&F#
请教各位是什么原因,如何解决?