常量
NAI|AI_PERFORMANCE_EXPORT_PRICE_DIFF
if price ratio between base and max possible is at least this value for a certain good, it will skip it when trading (0-1)
定义loading_screen/common/defines/00_defines.txt:709
0.65
if price ratio between base and max possible is at least this value for a certain good, it will skip it when trading (0-1)