雷哥,请教一下按照那个教程第四章,按下preview all 后并未出现棱镜三维图,为什么呢?? c "=N
System being written to file geo_bld.sys TYns~X_PR
--- SYSTEM NEW; RESET; RAYS 0 NaUr!s
0 rays defined g(x9S'H3l
--- $PLOT NORM i&Fiq&V)[
--- $IO PLOT n]Li->1
--- SYSTEM FROM GEO_BLD /*)Tl
System being read from file geo_bld.sys (<*e