After the implementation of the EPI c old chain system,the incidence and mortality of the six infectious diseases have significantly reduced; the ave rage annual infection incidence is r educed form 624.99/100000to 5.31/100000,a fall of 99.16%.是什么意思_After the implementation of the EPI c old chain system,the incidence and mortality of the six infectious diseases have significantly reduced; the ave rage annual infection incidence is r educed form 624.99/100000to 5.31/100000,a fall of 99.16%.在线翻译_英语_读音_用法_例句