Hetai Gold Mine has established for 13 years, during the first 4years, the dressing damaged ore dilution standard and ore quality had taken greatchange, which the result of geologic and measure technological department's serious management and surveyed besides.
河台金矿建矿 13年中前 4年和后 4年的采矿损失贫化指标与矿石质量发生很大变化。
The following factors influencing the ore quality in Hunan Taojiang Mn Deposit are analysed: geological structure, ore body existing state; mining technique and management.
分析桃江锰矿影响矿石质量的因素为 :地质构造、矿体赋存状态、开采技术条件及管理因素 ,指出了提高矿石开采质量的必要性 ,着重提出了贫薄锰矿开采的质量管理方
From the geochemical behaviour of chromium,forming process of chromite,controlling mechanism of Al3＋ ,Fe3＋ on Cr3＋ , and mineral association characteristics of chromite ores, the factors controlling ore quality of chromite are discussed in the paper.
从铬的地球化学性状、铬铁矿的形成过程， Al3＋， Fe3＋对 Cr3＋的制约机制及矿石矿物共生组合特征讨论了控制铬铁矿矿石质量的因素，这一研究对评价矿石质量有重要意义。
Based on the ore reserves, the future production capability of the main minerals and the geo logical and mineral potential, the current status,the existing problems and the future development of canadian mining industry are discussed.
从加拿大现有的矿石贮量、主要矿产今后的生产能力、地质及矿产资源的潜力等方面，介绍了加拿大矿业的现状、存在的问题和发展趋势。
Geologic and Measure Technological Department Tested the Useful of Raise Ore Quality;
地测技术部门对提高矿石质量的作用初探
A test of the mineral quality or content of an ore by milling.
矿石碾磨实验通过碾磨来鉴定矿石的矿砂品质或含量的测试
Iron ore, as mined, contains varying quantities of impurities.
铁矿石从地下开采出来时具有不同含量的杂质。
The Feldspar in Feicui from Myanmar and the Influence on the Quality of Feicui;
缅甸翡翠中的长石矿物及其对翡翠质量的影响
PURCHASE OF LIME FOR NON - FERROUS METAL FLOTATION AND ITS QUALITY CONTROL;
有色金属选矿用石灰的采购与质量控制
Study on the Ore Grade Dynamic Detection and Quality Control System of ZhongJia Mining Group
中加矿业公司矿石品位动态检测及质量控制系统试验研究
a geological change in the mineral content of rock after the rock has formed.
在岩石形成之后发生的岩石内矿物含量的地质变化过程。
Study on Mineralogy, Gemology and the Quantity Evaluation of Nanzheng Serpentine in Hanzhong County, Shanxi Province;
陕西省汉中地区南郑蛇纹石玉的矿物学、宝石学研究及质量评价
they extracted some calcium carbonate ores in the mine.
他们在矿上开采出了一些石灰质矿石。
Study on mineral properties and dressing experimental of difficultly-dressed molybdenum mineral
某难选钼矿矿石性质及选矿实验研究
Generally speaking a usable ore must be relatively rich in the compounds of the metal and low in unwanted impurities.
总的说来．价值的矿石其金属含量应比较丰富，杂质含量应较低。
The limestone absorbs impurities from the ore.
石灰石从矿石中吸收杂质。
A rock containing enough iron to permit commercial extraction; an iron ore.
铁矿石含有足够商业开采用铁量的岩石；铁矿石
recoverable oil reserves
(矿业) 可采石油储量
Ores are also being obtained in quantity from other countries.
矿石也从国外大量输入。
The quality of the flint on the Norfolk site suggests that the miners there were kept busy with many orders
诺福克发掘工地的燧石质量表明：那里的矿工们一直在疲于奔命。
They successfully abstracted gold of high quality from low-grade ore
他们成功地从低品位的矿石中提炼出高质量的黄金。
Qualitative or quantitative analysis of a substance, especially of an ore or drug, to determine its components.
化验，分析物质的定性或定量分析，尤指矿石或药物，检验内含成份