It shows that the average content of fluorine of 71 wells in endemic distrits is more than 1. 5mg/L ,while the average content of fluorine of 90 wells in non-edemic districts is no nore than 0. 53mg/L.是什么意思_It shows that the average content of fluorine of 71 wells in endemic distrits is more than 1. 5mg/L ,while the average content of fluorine of 90 wells in non-edemic districts is no nore than 0. 53mg/L.在线翻译_英语_读音_用法_例句