manganese-iron

基本解释

The result showed that in different time pyrolusite coexisting component had different effect on desulfurization efficiency and manganese iron.
结果表明,软锰矿的共存组分对于脱硫率及锰离子浓度在不同时间有不同程度的影响。
On Deionization of Iron Ion and Manganese Iron from Ground Water
浅谈地下水铁、锰离子的去除
A mixture of black manganese oxide minerals.
硬锰矿一种黑色氧化锰矿的混合物
Napoleon conquered by the force of an iron will.
拿破仑攻无不克靠的是坚强的意志。
It will take weeks to get all the wrinkle iron out.
解决这些难题得要几周时间。