单词 | 氢化 |
释义 | 〔palladium〕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 46; atomic weight 106.4; melting point 1,552°C; boiling point 3,140°C; specific gravity 12.02 (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46;原子量106.4;熔点1,552°C;沸点3,140°C;比重12.02(在20°C时);化合价2,3,4 参见 element〔triamcinolone〕A synthetic glucocorticoid, C21H 27FO 6, used as an anti-inflammatory drug in the treatment of allergic and respiratory disorders. 去氮松,氟烃氢化泼尼松:一种合成的肾上腺皮质甾体药物,C21H 27FO 6,用作抗发炎药物用于过敏性和呼吸道患疾 〔margarine〕A fatty solid butter substitute consisting of a blend of hydrogenated vegetable oils mixed with emulsifiers, vitamins, coloring matter, and other ingredients.人造奶油:一种多脂肪固体黄油的替代物,由氢化植物油与乳化剂、维他命、色素和其它成份的混合物构成〔corticosteroid〕Any of the steroid hormones produced by the adrenal cortex or their synthetic equivalents, such as cortisol and aldesterone.皮质甾类:由肾上腺或其合成的同类物,如氢化皮质酮和醛固酮〔torbernite〕A green radioactive mineral that is a hydrous crystalline phosphate of uranium and copper.铜铀云母:一种绿色的放射性矿物,为铀和铜的氢化结晶云母〔effloresce〕To become a powder by losing water of crystallization, as when a hydrated crystal is exposed to air.风化:当氢化晶体暴露在空气中时,晶体丧失水分而变成粉末的现象〔hydrogen〕A colorless, highly flammable gaseous element, the lightest of all gases and the most abundant element in the universe, used in the production of synthetic ammonia and methanol, in petroleum refining, in the hydrogenation of organic materials, as a reducing atmosphere, in oxyhydrogen torches, and in rocket fuels. Atomic number 1; atomic weight 1.00797; melting point -259.14°C; boiling point -252.8°C; density at 0°C 0.08987 gram per liter; valence 1. See table at element 氢:一种无色,易燃的气体物质,在所有气体中最轻,而宇宙中最多用来生产合成氨和甲醇,提炼石油,氢化有机物质作为收缩的气体,用在氧氢焰熔接器和火箭燃料中。原子序数为1;原子量为1.00797;熔点为-259.14°C;沸点-252.8°C;零度时的密度是0.08987克/公升;原子价为1 参见 element〔cesium〕A soft, silvery-white ductile metal, liquid at room temperature, the most electropositive and alkaline of the elements, used in photoelectric cells and to catalyze hydrogenation of some organic compounds. Atomic number 55; atomic weight 132.905; melting point 28.5°C; boiling point 690°C; specific gravity 1.87; valence 1. See table at element 铯:一种质地柔软的银白色韧性金属,室温时为液体,为最具正电性与碱性的元素,用作光电池和某些有机化合物氢化作用的催化剂。原子序数55;原子量132.905;熔点28.5°C;沸点°C;比重1.87;化合价1 参见 element〔prednisolone〕A synthetic steroid, C21H 28O 5, similar to hydrocortisone and used in various compounds as an anti-inflammatory, immunosuppressive, antiallergic, and anticancer drug. 波尼松龙,氢化波尼松:合成类固醇,C21H 28O 5,类似于氢化可体松,用在各种化合物中作消炎药、免疫抑制药、抗过敏和抗癌药 |
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