精炼: refine; purify affinage; fin ...纯金属: simple metal; fine metal精炼纯菜籽油: refined pure rapeseed oil不纯金属: impure metal超纯金属: ultra pure metal; ultra-pure metal超高纯金属: ultra high purity metal; ultra pure metal; ultra-high purity metal纯金属的: unalloyed纯金属粉末: pure metal powder纯金属接触: pure metallic contact纯金属接点: pure metallic contact纯金属结晶: pure metal crystal纯金属阴极: pure metallic cathode高纯金属: high pure metal; high purity metal; high-purity metal极高纯金属: very high purity metal高纯金属制取: production method of high pure metals; productionmethodofhighpuremetals区熔提纯金属: zone purified metal区域提纯金属: zone purified metal; zone-purified metal; zone-purifiedmetal金属精炼: metal purification; metal purifying; metal refinement; refining of metal金属精炼法: metal-purifying process; purifying process精炼金属: fine metal; finishing metal; refined metal纯金: fine gold; pure gold贵金属精炼厂: precious-metal refiner; precious-metalrefiner火法精炼金属: fire refined metal金属区域精炼: zone refining of metals区域精炼金属: zone melted metal; zone refined metal