GbEng
吸气剂以少量加入化学或冶金过程中用来吸收杂质的物质 A material added in small amounts during a chemical or metallurgical process to absorb impurities.
渗碳处理一种冶金镀膜工序，在此工序中把钢或铁浸入另一种金属如锌、铬或铝的粉剂里，并加热至这一金属的熔点温度以下 A metallurgical coating process in which iron or steel is immersed in a powder of another metal, such as zinc, chromium, or aluminum, and heated to a temperature below the melting point of either.
热冶，火法冶金一种冶炼矿石的程序，如熔炼，它依靠热的作用 An ore-refining process, such as smelting, dependent on the action of heat.
水冶金术通过液体过程，象过滤，提炼，沉淀等方法处理金属，从矿石中或矿石浓缩物中分离出金属 The treatment of metal or the separation of metal from ores and ore concentrates by liquid processes, such as leaching, extraction, and precipitation.