将igs文件导入LT出现以下问题: 9`T2
Bhg,P.7
*** Error (AITX_BLANKED_ENTS) *** ,HECHA_"
K_o[m!:jU
The input file did not contain any supported non blanked independant entities. mJ JF
JN> h:
Please check the documentation for a list of supported entities. ~U+W4%f8
)JXy>q#
请教各位是什么原因,如何解决?