999英语网 英语单词
Neptunium的音标发音
Neptunium
英式发音：[nep'tjunm] or [np'tjunm]
美式发音
(noun.) a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium.
录入:罗宾逊
(noun.) a radioactive transuranic metallic element; found in trace amounts in uranium ores; a by-product of the production of plutonium.
录入:罗宾逊