专业释义英英释义
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铪 - 引用次数：2
A method for determination of lithium,strontium,gallium,niobium,tantalum,zirconium,hafnium in bauxite by inductively coupled plasma-mass spectrometry（ICP-MS） is proposed. The bauxite samples were digested by a mixed reagent of HNO3-HF in closed vessels.
采用电感耦合等离子体质谱,硝酸-氢氟酸增压密闭消解样品,实现了铝土矿中锂、锶、镓、铌、钽、锆和铪的同时测定。
参考来源 - 密闭消解电感耦合等离子体质谱法测定铝土矿中锂、锶、镓、铌、钽、锆和铪 -
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·2,447,543篇论文数据，部分数据来源于NoteExpress
hafnium [ 'hæfniəm ]
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n.
a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
同义词： Hf atomic number 72
以上来源于: WordNet
柯林斯英汉双解大词典
hafnium /ˈhæfnɪəm/
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1.
N a bright metallic element found in zirconium ores: used in tungsten filaments and as a neutron absorber in nuclear reactors. Symbol: Hf; atomic no: 72; atomic wt: 178.49; valency: 4; relative density: 13.31; melting pt: 2231±20°C; boiling pt: 4603°C 铪
双语例句原声例句权威例句
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And how is it known that Mars had hafnium-187?
那么是如何知道火星有铪- 187的呢？
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Chemical form of hafnium is perchlorate or nitrate.
铪的化学形态为过氯酸盐或硝酸盐。
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The extraction separation process for zirconium and hafnium with MIBK was briefly reviewed in this paper.
简要评述了用甲基异丁基酮（ MIBK） 萃取分离锆铪方法的基本原理、分离工艺和条件、萃取设备。
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So, how many distinct, so again, we're talking about distinct kinetic energies, a spectrum for the element hafnium, 72 and I'll tell you here that it has a z of 72, so you don't have to spend two minutes searching your periodic table.
好，有多少分立的……还是一样，我们讨论的还是不同的动能，铪元素的光谱中出现，而且我来告诉大家铪的原子序数是，这样你就不用因为在元素周期表中找它,而花费两分钟的时间了。
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