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.
随便看	respew resphere Respighi, Ottorino respin respirability respirable respirant respirate respiration respirational respiration rate respirative respirator respiratored respiratory respiratory acidosis respiratory alkalosis respiratory center respiratory centre respiratory chain respiratory distress syndrome respiratory pigment respiratory quotient respiratory syncytial virus respiratory therapist