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palladium

音标[pә'leidiәm]

汉语翻译

n. 钯
【化】 钯Pd
【医】 钯(46号元素)
【经】 钯金

palladium词型变化

名词复数:palladia 简写符号:Pd 

palladium英语解释

名词 palladium:

  1. a silver-white metallic element of the platinum group that resembles platinum; occurs in some copper and nickel ores; does not tarnish at ordinary temperatures and is used (alloyed with gold) in jewelry
    同义词:Pd, atomic number 46

palladium详细解释

palladium

n.Symbol Pd (名词)符号 Pd
A soft, ductile, steel-white, tarnish-resistant, metallic element occurring naturally with platinum, especially in gold, nickel, and copper ores. Because it can absorb large amounts of hydrogen, it is used as a purification filter for hydrogen and a catalyst in hydrogenation. It is alloyed for use in electric contacts, jewelry, nonmagnetic watch parts, and surgical instruments. Atomic number 4'; atomic weight 0'.4; melting point ,552=C; boiling point 3,40=C; specific gravity 2.02 (20=C); valence 2, 3, 4.See table at element
钯:一种柔软的,易拉长的,银白色的,保持光泽的金属性元素,常与铂共生,尤其在金、镍和铜矿中存在。因为它能吸收大量氢,常用作除氢的过滤器或氢化作用的催化剂。其合金可用于电子接触器、珠宝、无磁性表部件以及外科医用器具。原子序数4';原子量0'.4;熔点,552=C;沸点3,40=C;比重2.02(在20=C时);化合价2,3,4参见 element

来源:
From Pallas [(discovered at the same time as the element)]
源自 Pallas[(与该元素同时被发现)]

palladium
palladium 2

n.(名词)
【复数】 pal.la.di.a[-dô-…] 或 pal.la.di.ums
A safeguard, especially one viewed as a guarantee of the integrity of social institutions:
保障:保卫,尤指被看作保证社会机关廉正的人:
例句:
the Bill of Rights, palladium of American civil liberties.
人权法案,美国公民自由的卫士

A sacred object that was believed to have the power to preserve a city or state possessing it.
帕拉狄昂女神的神像:一种圣物,被认为对持有它的城或州具保护的力量

来源:
Middle English Palladion [a statue of Pallas Athena believed to protect Troy]
中古英语 Palladion [据说可以保护特洛伊帕拉斯·雅典娜塑像]
from Old French palladion
源自 古法语 palladion
from Latin Palladium
源自 拉丁语 Palladium
from Greek Palladion
源自 希腊语 Palladion
from Pallas Pallad- [Pallas Athena]
源自 Pallas Pallad- [帕拉斯·雅典娜]

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