Base metals and gold are often found in association with magnetic minerals . 某些贱金属以及金常常与磁性矿物一起被发现。
Base metals and gold are often found in association with magnetic minerals such as magnetite and pyrrhotite . 某些贱金属以及金常常与磁铁矿和磁黄铁矿这类磁性矿物一起被发现。
Alchemists searched for the philosophers' stone, which was supposed to be capable of turning base metals into gold or silver . 炼金术士到处寻找点金石，据说那是能把贱金属变成金银的东西。
She was holding a teaspoon in her two hands, pressing her thumbs against it as if measuring her strength against the base metal . 她双手拿着一个茶匙，用拇指使劲按着它，好像同这块普通金属较量力气似的。
Dental base metal casting alloys - cobalt - based alloys 牙科金属基合金.钴基合金
Base metal materials for fixed dental restorations 固定牙齿修复用义齿基托金属材料
Dental base metal casting alloys - nickel - based alloys 牙科金属基铸造合金.镍基合金
Verification regulation of working base metal thermometer 工作用廉金属热电偶检定规程
Other base metals ; cermets ; articles thereof 其他卑金属；瓷金；及其制品
Other base metals ; cermets ; articles thereof 其他卑金属；瓷金；及其制品
