The results showed that there were some regions with different degrees of high fluorine and low iodine, so endemic goiter and endemic fluorosis diseases were epidemic.
结果表明叶河流域存在程度不等的高氟、低碘区，致使地方性氟病和地方性甲状腺肿流行。
2
Some example of microelements is iron, iodine, manganese, zinc, and fluorine.
一些例子说明人体所需的微量元素是铁、碘、锰、锌、氟。
3
To explore the distribution of high iodine and fluorine areas.