adj.冶金的；冶金學(xué)的

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. 滲碳處理一種冶金鍍膜工序，在此工序中把鋼或鐵浸入另一種金屬如鋅、鉻或鋁的粉劑里，并加熱至這一金屬的熔點(diǎn)溫度以下

A material added in small amounts during a chemical or metallurgical process to absorb impurities. 吸氣劑以少量加入化學(xué)或冶金過(guò)程中用來(lái)吸收雜質(zhì)的物質(zhì)

n.冶金學(xué)；冶金術(shù)