革新革新工具车间iron_foundry_advancein_game/common/advances/1_building_unlocks.txt:491用铁而非其他任何材质打造的工具更为坚固耐用，而生产耗时更短，工序更为简练。需要铅矿选矿革新requires革新树工场生产铅矿选矿工具车间铸炮工场武器工场定义in_game/common/advances/1_building_unlocks.txt:491492age = age_5_absolutism494unlock_building = iron_foundry496requires = lead_ore_dressing
铅矿选矿革新requires铅矿选矿革新requires铅矿选矿革新requires
