precious metal

• Investing in precious metals is going main stream as an asset class
  投资贵金属市场已经成为资产投资的主要潮流。
• Geometric size measuring methods of precious metals and their alloy materials
  贵金属及其合金材料几何尺寸测量方法
• Jewellery ; fineness of precious metal alloys iso 9202 : 1991 ; german version en 29202 : 1992
  珠宝.贵重金属合金的钝度
• Gold is a precious metal
  金子是一种贵金属。
• Precious metals have commonly been used as money for these reasons
  贵金属由于具备了这些条件，所以一直在充当货币。
• New type precious metal material technology and jewelry manufacturing industry
  新型贵金属材料工艺与首饰制造业的发展
• The sharp falls in precious metals have triggered a regional correction
  贵金属价格急剧下跌导致整个地区的股市调整。
• Precious metals - the finenesses of solders used with precious metal jewellery alloys
  贵重金属.贵重金属珠宝合金适焊性
• Measuring method for contact resistance of precious metal electrical contact materials
  贵金属电触点材料接触电阻的测量方法
• Methods for copper separation in precious metals concentrating and refining technology
  贵金属富集与精炼工艺中铜的分离方法