将igs文件导入LT出现以下问题: Q:b>1
Urm(A9|N
*** Error (AITX_BLANKED_ENTS) *** RLh%Y>w
b5
AP{
#
The input file did not contain any supported non blanked independant entities. :Mu]*N
30cb+)h(
Please check the documentation for a list of supported entities. U4NA'1yo
wx/*un%2
请教各位是什么原因,如何解决?