摘要:What Does Economic Indicator Mean?A piece of economic data, usually of macroeconomic scale, that is u[阅读全文:]
摘要:Lead Lead (pronounced /ˈlɛd/) is a main-group element with symbol Pb (Latin: plumbum) and a[阅读全文:]
摘要:SilverSilver is a chemical element with the chemical symbol Ag (Latin: argentum, from the Ancient Gre[阅读全文:]
摘要:Continuous casting (also called strand casting) is the process whereby molten steel is solidified int[阅读全文:]
摘要:The cis a unique type of rolling mill for the processing of steel slabs to hot rolled coil (HRC). The[阅读全文:]
摘要:Aluminium alloys are mixtures of aluminium with other metals (called an alloy), often with copper, zi[阅读全文:]
摘要:Gray ironGray iron or grey iron was the original "cast iron". It is an alloy of carbon, silicon, an[阅读全文:]
摘要:Galvanization or galvanisation refers to any of several electrochemical processes named after the Ita[阅读全文:]