释义 |
cal·i·for·ni·um AHD[kăl'ə-fôrʹnē-əm] D.J.[ˌkæləˈfɔːniːəm]K.K.[ˌkæləˈfɔrniəm]n.Symbol Cf (名词)符号 Cf - A synthetic element produced in trace quantities by helium isotope bombardment of curium. All isotopes are radioactive, chiefly by emission of alpha particles. Atomic number 98; mass numbers 244 to 254; half-lives varying from 25 minutes to 800 years. See table at element 锎:一种合成元素,由氦同位素轰击锔可得到微量的这种元素。所有同位素均是放射性元素,主要放射出α粒子。原子序数98;原子量244到254;半衰期从25分钟到800年不等 参见 element
- After California 源自 California
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