- heavy rare earths
- 重稀土(元素組)
English-Chinese dictionary. 2013.
heavy rare earths
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Rare earth element — Rare earth ore, shown with a United States penny for size comparison These rare … Wikipedia
Indian Rare Earths Limited — On August 18 1950, Indian Rare Earths Limited (IREL) was incorporated as a private limited company jointly owned by the Government of India and Government of Travancore, Cochin with the primary intention of taking up commercial scale processing… … Wikipedia
rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 … Universalium
dysprosium — /dis proh see euhm, shee /, n. Chem. a rare earth metallic element, highly reactive and paramagnetic, found in small amounts in various rare earth minerals, as euxenite and monazite: used to absorb neutrons in nuclear reactors. Symbol: Dy; at. wt … Universalium
Yttrium — (pronEng|ˈɪtriəm) is a chemical element with symbol Y and atomic number 39. It is a silvery metallic transition metal chemically similar to the lanthanoids and has historically been classified as a rare earth element. Yttrium is almost always… … Wikipedia
chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… … Universalium
Cerium — lanthanum ← cerium → praseodymium ↑ Ce ↓ Th … Wikipedia
Lanthanoid — The lanthanoid (according to IUPAC terminology) (previously lanthanide) series comprises the 15 elements with atomic numbers 57 through 71, from lanthanum to lutetium. [ [http://www.iupac.org/reports/periodic table IUPAC Periodic Table] ] [ [http … Wikipedia
alkaline-earth metal — /al keuh luyn errth , lin /, Chem. any of the group of bivalent metals including barium, radium, strontium, calcium, and, usually, magnesium, the hydroxides of which are alkalis but less soluble than those of the alkali metals. [1900 05] * * * ▪… … Universalium
Holmium — (pronEng|ˈhoʊlmiəm) is a chemical element with the symbol Ho and atomic number 67. Part of the lanthanide series, holmium is a relatively soft and malleable silvery white metallic element, which is stable in dry air at room temperature. A rare… … Wikipedia
Sojitz — Corporation 双日株式会社 Type Public KK Traded as TYO: 2768 Industry Conglomerate (Sogo shosha) Founded 2004 … Wikipedia
