革新革新先进采矿advanced_mining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解锁启用硝石原产启用明矾原产关联需要 1炼铁传统Requires隶属于 1传统年龄定义in_game/common/advances/0_age_of_traditions.txt:398age = age_1_traditionsicon = serbian_miningrequires = iron_workingresearch_cost = 2.0can_extract_saltpeter = yescan_extract_alum = yes历史记录