革新革新先进采矿advanced_miningin_game/common/advances/0_age_of_traditions.txt:367更先进和耐用的工具的发展，可以进一步扩展矿产和金属的开采。需要炼铁革新requires革新树采石场冶金炼铁先进采矿修正启用硝石原产是启用明矾原产是定义in_game/common/advances/0_age_of_traditions.txt:367368age = age_1_traditions369icon = serbian_mining370requires = iron_working371research_cost = 2.0373can_extract_saltpeter = yes374can_extract_alum = yes
炼铁革新requires
炼铁革新requires炼铁革新requires