英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

praseodymium    
n. 镨

镨

praseodymium
n 1: a soft yellowish-white trivalent metallic element of the
rare earth group; can be recovered from bastnasite or
monazite by an ion-exchange process [synonym: {praseodymium},
{Pr}, {atomic number 59}]

Praseodymium \Pra`se*o*dym"i*um\, n. [Praseo- didymium.]
(Chem.)
An elementary substance, one of the constituents of didymium;
-- so called from the green color of its salts. Symbol Ps.
Atomic weight 143.6.
[1913 Webster]


请选择你想看的字典辞典：
单词字典翻译
praseodymium查看　praseodymium　在百度字典中的解释百度英翻中〔查看〕
praseodymium查看　praseodymium　在Google字典中的解释Google英翻中〔查看〕
praseodymium查看　praseodymium　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Praseodymium - Wikipedia
    Praseodymium is a chemical element; it has symbol Pr and atomic number 59 It is the third member of the lanthanide series and is considered one of the rare-earth metals It is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties
  • Praseodymium | Rare Earth Element, Atomic Number 59 | Britannica
    praseodymium (Pr), chemical element, a rare-earth metal of the lanthanide series of the periodic table Praseodymium is a moderately soft, ductile, and malleable silvery white metal
  • Praseodymium - Element information, properties and uses | Periodic Table
    Praseodymium occurs along with other lanthanide elements in a variety of minerals The two principal sources are monazite and bastnaesite It is extracted from these minerals by ion exchange and solvent extraction
  • Praseodymium | History, Uses, Facts, Physical Chemical Characteristics
    Praseodymium was discovered in 1841 It is strong paramagnetic in nature It is widely used as an alloying agent with magnesium to make high strength metal It is found in house equipment like color television, lamps and glasses
  • Facts About Praseodymium - Live Science
    Praseodymium is a silvery rare-earth metal that is soft, malleable and ductile It is one of the lanthanides [See Periodic Table of the Elements] Although praseodymium is more resistant to
  • Praseodymium | Pr | CID 23942 - PubChem
    Praseodymium | Pr | CID 23942 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety hazards toxicity information, supplier lists, and more
  • Periodic Table of Elements: Los Alamos National Laboratory
    Praseodymium is soft, silvery, malleable, and ductile It is somewhat more resistant to corrosion in air than europium, lanthanum, cerium, or neodymium, but it does develop a green oxide coating that falls off when exposed to air As with other rare-earth metals, it should be kept under a light mineral oil or sealed in plastic
  • Praseodymium Facts, Symbol, Discovery, Properties, Uses - Chemistry Learner
    Praseodymium (pronunciation pra-see-oh-DIM-ee-em [2]), represented by the chemical symbol Pr [1], is a soft transition element [8] belonging to the family of rare earth metals [3, 4] Naturally occurring Pr has a single stable isotope with mass number 141 [1, 3]
  • What is Praseodymium? - BYJUS
    Today, the metal praseodymium is mainly obtained from the process of ion exchange through monazite sand, which is a precious earth element It is rarely found in the earth’s crust if so, is only found at about 8 7 parts million by weight and comes among the lists of lanthanides
  • WebElements Periodic Table » Praseodymium » the essentials
    Praseodymium is soft, silvery, malleable, and ductile It was prepared in relatively pure form in 1931 It is somewhat more resistant to corrosion in air than europium, lanthanum, cerium, or neodymium, but it does develop a green oxide coating that "spalls" away when exposed to air





中文字典-英文字典  2005-2009