palladium
音標[p?'leidi?m] 讀音漢語翻譯
n. 鈀
【化】 鈀Pd
【醫】 鈀(46號元素)
【經】 鈀金
詞型變化:
名詞複數:palladia 簡寫符號:Pd英文解釋:
名詞 palladium:
- 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同義詞:Pd, atomic number 46
詳細解釋:
palladium
n.Symbol Pd (名詞)符號 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 鈀:一種柔軟的,易拉長的,銀白色的,保持光澤的金屬性元素,常與鉑共生,尤其在金、鎳和銅礦中存在。因為它能吸收大量氫,常用作除氫的過濾器或氫化作用的催化劑。其合金可用於電子接觸器、珠寶、無磁性表部件以及外科醫用器具。原子序數4';原子量0'.4;熔點,552=C;沸點3,40=C;比重2.02(在20=C時);化合價2,3,4參見 element
來源:From Pallas [(discovered at the same time as the element)] 源自 Pallas[(與該元素同時被發現)]
palladium
palladium 2
n.(名詞)【複數】 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:保衛,尤指被看作保證社會機關廉正的人:例句:the Bill of Rights, palladium of American civil liberties.人權法案,美國公民自由的衛士
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:一種聖物,被認為對持有它的城或州具保護的力量
來源:Middle English Palladion [a statue of Pallas Athena believed to protect Troy] 中古英文 Palladion [據說可以保護特洛伊帕拉斯·雅典娜塑像] from Old French palladion 源自 古法文 palladion from Latin Palladium 源自 拉丁語 Palladium from Greek Palladion 源自 希臘語 Palladion from Pallas Pallad- [Pallas Athena] 源自 Pallas Pallad- [帕拉斯·雅典娜]
展開閱讀更多↓
猜你喜歡:
- polynomial method的漢語翻譯
- pseudoalums的漢語翻譯
- positional number的漢語翻譯
- portion的漢語翻譯
- phylloaetioporphyrin的漢語翻譯
- parity detector的漢語翻譯
- promisor的漢語翻譯
- peripuncture的漢語翻譯
- prefix character的漢語翻譯
- provocateur agent的漢語翻譯
- profunda cervicis的漢語翻譯
- peer entity的漢語翻譯
- procurator in reserve的漢語翻譯
- plugged program的漢語翻譯
- psychiater的漢語翻譯