矿石

• Method for determination of gold and silver in ores
  矿石中金银含量的测定方法
• 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 net profit amounts to twenty dollars per ton of ore
  每吨矿石的净利为二十美元。
• Chromium ores - method for determination of aluminium content
  铬矿石.铝含量测定方法
• Chromium ores - methods for determination of sulfur content
  铬矿石.硫含量的测定方法
• New development of uranium ore radiometric sorting
  铀矿石放射性分选的新进展
• Titanium ores - methods for determination of phosphorus
  钛矿石.磷的测定方法
• Methods for determination of iron in titanium ores
  钛矿石中铁含量的测定方法
• Manganese ores - methods for determination of calcium content
  锰矿石.钙含量测定方法