将igs文件导入LT出现以下问题: 'f?$"U JF
s@7H1)U
*** Error (AITX_BLANKED_ENTS) *** Z@$8I{}G
]H1I,`=@
The input file did not contain any supported non blanked independant entities. (V HL{rj
~T89_L
Please check the documentation for a list of supported entities. /QJ?bD#a
z+>}RT]
请教各位是什么原因,如何解决?