摘要:Indium (pronounced /ˈɪndiəm/) is a chemical element with chemical symbol In and atomic[阅读全文:]
摘要:Molybdenum (pronounced /məˈlɪbdənəm/, from the Greek word for the metal "le[阅读全文:]
摘要:Tungsten (pronounced /ˈtʌŋstən/), also known as wolfram (/ˈwʊlfrəm[阅读全文:]
摘要:Niobium (pronounced /naɪˈoʊbiəm/) (Greek mythology: Niobe, daughter of Tantalus),[阅读全文:]
摘要:Cadmium (pronounced /ˈkædmiəm/) is a chemical element with the symbol Cd and atomic n[阅读全文:]
摘要:Platinum is a chemical element with the chemical symbol Pt and an atomic number of 78. Its name is de[阅读全文:]
摘要:Bismuth is a chemical element that has the symbol Bi and atomic number 83. This trivalent poor metal[阅读全文:]
摘要:Spring steel is a low alloy, medium carbon steel with a very high yield strength. This allows objects[阅读全文:]
摘要:Piano wire is a specialized type of wire made for use in piano and other musical instrument strings,[阅读全文:]