Какво знаете за ниобия? If you’re like most people, the answer is not much. Въпреки това, know this: niobium is used in all sorts of things, from hypoallergenic jewelry to superconducting magnets. You’ll even find niobium in some jet engines. Niobium Characteristics Niobium is a shiny, white metal that may turn shades of blue,… Прочети повече »
