英语词汇“hafnium”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

hafnium

/ˈhafnɪəm

noun [mass noun]

The chemical element of atomic number 72, a hard silver-grey metal of the transition series, resembling and often occurring with zirconium. (Symbol: Hf) Titanium is found in column four along with chemically similar zirconium, hafnium, and thorium....

For most of history, hafnium and zirconium were not clearly distinguished from each other.
Samarium is a rare earth element, one of the elements that occupy the space in Row 6 of the periodic table between lanthanum and hafnium.

Origin

1920s: modern Latin, from Hafnia, Latinized form of Danish Havn, former name of Copenhagen.

单词	hafnium
释义	hafnium /ˈhafnɪəm / noun [mass noun] The chemical element of atomic number 72, a hard silver-grey metal of the transition series, resembling and often occurring with zirconium. (Symbol: Hf) Titanium is found in column four along with chemically similar zirconium, hafnium, and thorium.... For most of history, hafnium and zirconium were not clearly distinguished from each other. Samarium is a rare earth element, one of the elements that occupy the space in Row 6 of the periodic table between lanthanum and hafnium. Origin 1920s: modern Latin, from Hafnia, Latinized form of Danish Havn, former name of Copenhagen.
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