单词	保存--保留--守恒
释义	保存，保留，守恒conservation
随便看	electric fluid theory electric fluviograph electric flux electric flux density electric flux intensity electric flux line electric focusing electric fog horn electric force electric force gradient electric force microscope electric force microscope {= efm} electric forming electric fryer electric frying pan electric fuel pump electric furnace electric-furnace electric furnace; electric stove electric-furnace ferrosilicon electric furnace iron electric furnace of resistance type electric furnace process electric furnace steel electric furnace steel making