将igs文件导入LT出现以下问题: 6(`N!]e*L
Fk/I
(Q
*** Error (AITX_BLANKED_ENTS) *** .<`)`:n+B
Z\CvaX
The input file did not contain any supported non blanked independant entities. M<w.q|P
JK =A=
Please check the documentation for a list of supported entities. ]64}Xob87_
34u[#O{2
请教各位是什么原因,如何解决?