dropping the bottom是什么意思

网络释义

1)dropping the bottom,落炉，打炉2)cupola drop,落炉，下炉3)ash contamination in tunnel kiln,窑炉落脏4)Dajianlu,打箭炉5)Volta furnace,伏打电炉6)daubing,炉底打结

The Rise and Development of the Town of Dajianlu in Qing Dynasty;

清代打箭炉城镇的兴起与发展