Haque, N., Hughes, A., Lim, S., Vernon, C.: Rare earth elements: overview of mining, mineralogy, uses, sustainability and environ- mental impact. Resources 3, 614-635 (2014)Haque, N.; Hughes, A.; Lim, S.; Vernon, C. Rare earth elements: Overview of mining, mineralogy, uses, ...
(1802) by the Swedish chemistAnders Gustaf Ekebergand named after the mythological characterTantalusbecause of the tantalizing problem of dissolving theoxidein acids. Due to the great chemical similarity of niobium and tantalum, the establishment of the individual identities of the two elements was ...
Rare-earth element, any member of the group of chemical elements consisting of three elements in Group 3 (scandium [Sc], yttrium [Y], and lanthanum [La]) and the first extended row of elements below the main body of the periodic table (cerium [Ce] throug
Uses of rare earth elements: This chart shows the use of rare earth elements in the United States during 2021. Many vehicles use rare earth catalysts in their exhaust systems for air pollution control. A large number of alloys are made more durable by the addition of rare earth metals. ...
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rare earth elements 释义 稀土元素 实用场景例句 全部 The Catalytic mechanism ofrare earth elementsis also discussed. 讨论了稀土元素的催渗机理. 互联网 Some typical cast ferroalloys and nonferroalloys containingrare earth elementswere described.
USES OF RARE EARTH ELEMENTS FOR SLIMMINGDisclosed is a use of rare earth element selected from the group consisting of lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), ...
The meaning of RARE EARTH ELEMENT is any of a series of metallic elements of which the oxides are classed as rare earths and which include the elements of the lanthanide series and sometimes yttrium and scandium —called also rare earth metal.
rare earth n. 1.Any of various oxides of the rare-earth elements. 2.A rare-earth element. [rare(because the minerals from which the rare-earth elements were first isolated are uncommon) +earth,metallic oxide.] American Heritage® Dictionary of the English Language, Fifth Edition. Copyright...
4. It's rare earth elements(稀土元素) play an important part in our ___ /ˈmɒdɪn/ life.5. Xizang is ___ (real) a beautiful place. I must visit it some day. 相关知识点: 试题来源: 解析 4. modern 5. really 解析: 4. 题目中音标 /ˈmɒdɪn/ 代表单词 "modern",意...