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- The ore is smelted in this large factory. 这个大型工厂里熔炼矿石。
- It is not simple how the ore is changed into iron . 如何把矿石变成铁并不简单。
- The ore is heated in a furnace, then pounded with heavy hammer. 铁矿石在炉石加热，然后用重锤敲打。
- The ore is heated in a furnace,then pounded with heavy hammer. 铁矿石在炉石加热，然后用重锤敲打。
- The ore is difficult 矿难
- Navigation is difficult on this river because of the hidden rocks. 因为河上有暗礁，所以在这条河上航行很困难。
- It is difficult to decide between the two opinions. 在这两种意见之间抉择是困难的。
- Siderite ore is one of the complex and refractory ores,from which it is difficult to obtain high grade iron concentrate. 菱铁矿为复杂难选矿种之一,采用常规选矿方法难以得到较高铁品位的铁精矿。
- It is difficult to stamp out all the crimes. 很难把所有的犯罪都消除掉。
- The stain on his shirt is difficult to clean off. 他衬衣上的污点很难去除掉。
- Intricate Cu, Pb and Zn sulphide ore is difficult to be separated by flotation, because Cu, Pb and Zn minerals is very close and the side of these minerals in ting. 某铜铅锌硫化矿,铜铅锌共生关系密切,且铅锌矿物嵌布粒度细小,铅锌矿物分离难度大。
- Primary gold ore from Bangi, Guizhou, belongs to a clastic-type, finely disseminated, refractory particles.It is difficult to extract gold from the ore by cyanide infusing. 贵州板其原生金矿石属碎屑岩类微细浸染型难选冶矿石，在氰化浸出之前需进行预处理。
- First, ore is mixed with coke and limestone. 先把铁矿石和焦碳、石灰石混合在一起。
- The Norman is difficult to be conquered. 诺曼第人很难被征服。
- We will make an assay of the ore that he brought. 我们将对他带来的矿石做实验鉴定。
- The silver mine is no longer workable, eg because it is flooded or because the ore is exhausted. 这个银矿不值得开采了（如因积水或矿石储量将尽）.
- It was asserted that the ore is mainly composed of minerals of kurnakovite, inderite and pinnoite. 确定了该硼镁矿的主要矿物组成为库水硼镁石、多水硼镁石及柱硼镁石。
- It is difficult to find work in the present economic situation. 在目前的经济情况下很难找到工作。
- The silver mine is no longer workable,eg because it is flooded or because the ore is exhausted. 这个银矿不值得开采了(如因积水或矿石储量将尽).
- The ore is lead mine of partial oxidation,the lead ore consists chiefly of galena and cerusite. 所处理矿石为半氧化铅矿石,矿石中铅以方铅矿和白铅矿形式产出,铅的氧化物主要为白铅矿,分布率达39%25。
