分析了水中铁锰含量过多的危害，阐述天然锰砂的除铁原理、除铁效果、操作注意事项和延长使用寿命的方法。
The paper reports the hazard of much more content of Fe and Mn of water, the Fe-removing principle and result by natural Mn, operation caution and methods of extention service life.
虽然我们需要锰，每天应该按推荐量摄入这种矿物质，但是吃太多杏仁会导致我们摄入过多锰。
While we need manganese and should consume the recommended amount of this mineralevery day, eating too many almonds can cause us to exceed the amount of manganese weconsume.
应用推荐