| 1. | Coal seams intermixed with iron ore .
煤层和铁矿混杂在一起。 |
| 2. | To smelt iron ore in a blast furnace can obtain iron .
在高炉中熔炼铁矿石，可取得铁。 |
| 3. | Many years ago men first heated iron ore in a fire .
许多年前，人们初次在火中锻烧矿石。 |
| 4. | Iron ores of greatest economic interest contain magnetite and hematite .
最具有经济价值的铁矿包括磁铁矿和赤铁矿。 |
| 5. | Using coke in iron ore reduction produces copious quantities of airborne particulates .
炼铁过程中使用焦炭，会在空中形成大量的悬浮粒子。 |
| 6. | They provide the iron ores which supply the industrial complexes of detroit and the surrounding regions .
它们给底特律及其周围地区的工业联合企业提供铁矿石。 |
| 7. | Cu-fe-ni sulfides are disseminated both in the core of titaniferous iron ore and in some other rocks .
Cu-Fe-Ni硫化物星散分布于钛磁铁矿核心部分以及其他几种岩石中。 |
| 8. | Iron ores - methods for determination of titanium content
铁矿石.钛含量测定方法 |
| 9. | Iron ore pellets - determination of crushing strength
铁矿石颗粒.抗压强度的测定 |
| 10. | Iron ores - methods for determination of nickel content
铁矿石.镍含量的测定方法 |
