| 1. | Many iron minerals are only slightly magnetic .
不少铁矿物只有微弱的磁性。 |
| 2. | Coal seams intermixed with iron ore .
煤层和铁矿混杂在一起。 |
| 3. | To smelt iron ore in a blast furnace can obtain iron .
在高炉中熔炼铁矿石，可取得铁。 |
| 4. | Magnetic techniques are most suitable in the search for iron in this form .
磁法最适用于勘探这类铁矿。 |
| 5. | 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。 |
| 6. | There are rich iron mines around the largest lake, l. superior in the west .
在最大的湖即西边的苏必利尔周围有着丰富的铁矿。 |
| 7. | Iron ore, coke, and limestone are put into the top of the furnace. these are called "charge" .
铁矿石、焦碳、石灰石装进炉子的顶部。这些东西叫炉料。 |
| 8. | 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。 |
| 9. | Because this fact was no recognized, the early magnetic prospecting for iron deposits was spectacularly unsuccessful .
由于不了解这个事实，因此早期为寻找铁矿进行磁法勘深，遭到了惊人的失败。 |
| 10. | General mackesy's original orders had been that, after landing at narvik, he should push rapidly on to gellivare orefield .
麦克西将军最初接到的命令是，在纳尔维克登陆后，他应该迅速地向耶利瓦勒铁矿区推进。 |
