单词 | noble metal |
例句 | The deposits left behind are akin to the eight noble metals but even nobler: extraordinarily conductive and resistant to corrosion, with a seemingly limitless range of uses. All the World Needs Is a Glowing Blue Supermetal From Space 2021-06-01T04:00:00Z Mixing the magnetic metal nickel with the noble metal gold radically changes the electronic properties. Golden future for thermoelectrics 2023-09-18T04:00:00Z A cousin of platinum and traditionally much less expensive, palladium is part of a family of metals known as the “noble metals” because they resist corrosion and oxidation. This Metal Is Worth More Than Gold, and It Scrubs Your Car’s Exhaust 2018-12-13T05:00:00Z But gold, and other noble metals that work just as well, are expensive. New water purification system could help slake the world’s thirst 2016-04-27T04:00:00Z For example, the electrochemical stabilities of noble metals such as platinum and gold fall sharply as their dimensions decrease to nanometre scales. Materials science: Share corrosion data 2015-11-24T05:00:00Z The process won't inspire a new gold rush, because scaling it up would be both prohibitively expensive and time-consuming, but it does have implications for the creation, detection and processing of this noble metal. Microbiology: There's gold in them there bugs 2013-03-13T18:21:17.547Z And a lot of catalysts use so-called noble metals like platinum, palladium and rhodium, which are expensive. Modern-Day Alchemy Has Iron Working Like Platinum 2012-10-15T20:02:01Z The noble metals, gold, silver and platinum, are too sensitive, and the very oxidisable metals too insensitive, for telegraphic work, but an admixture may be advantageously made. Hertzian Wave Wireless Telegraphy 2012-01-09T03:00:20.570Z In choice pieces of the noble metals, the artistic work of the goldsmith was of more value than its weight. Pictures of German Life in the XVth XVIth and XVIIth Centuries, Vol. II. Wear this in remembrance of me, and may our friendship ever remain as pure and true as this noble metal! Barbarossa; An Historical Novel of the XII Century. Botanical splendors from exotic worlds rioted in orderly tangles of aromatic greenery, with sculpture of glass, marble and the noble metals glinting like pale ghosts against the darker masses. Shock Treatment Oxygen, recognized by its power of igniting a glowing splinter, results from the decomposition of oxides of the noble metals, peroxides, chlorates, nitrates and other highly oxygenized salts. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" It is well said; but the last letter to Frank Scott is scarcely 210 of a noble metal. The Works of Robert Louis Stevenson, Volume 9 Contrariwise, under ordinary conditions the substances of high molecular weights—the "noble metals"—are indifferent to other substances; and such compounds as they do form under conditions specially adjusted, are easily destroyed. Essays: Scientific, Political, & Speculative, Vol. I Like all distant unknown regions, Novaya Zemlya was of old renowned for its richness in the noble metals. The Voyage of the Vega round Asia and Europe, Volume I and Volume II "It is," she said; "by that pure and noble metal are we united." The Tinted Venus A Farcical Romance In addition to the mining and reduction of the ores of the three noble metals, gold, silver, and mercury, which these people understood and practised, were similar operations regarding lead, copper, and tin. Mexico Its Ancient and Modern Civilisation, History, Political Conditions, Topography, Natural Resources, Industries and General Development The noble metals would be too costly, the baser would corrode; and with either the value of the plates as metal would be a standing danger to the deposit. Scientific American, Volume XXXVI., No. 8, February 24, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. All her vitality seemed to have withdrawn itself into the arch of dense black hair which still clasped her forehead like the noble metal of some antique bust. The Fruit of the Tree Metals of the first class are often spoken of as base, and gold and silver as noble metals. A Text-book of Assaying: For the Use of Those Connected with Mines. The geologist's theory, combined with the knowledge that the noble metal is 'chiefly found among palæozoic rocks of a quartzose type,' is practically valuable on the Gold Coast. To The Gold Coast for Gold, Vol. II A Personal Narrative But now, at the first and yet final trial, she is proved and found to be of noble metal. An Introduction to the Study of Browning It is a pity that this family of noble metals is so restricted, for they are unsurpassed in tenacity and incorruptibility. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries These metals, termed the noble metals, do not oxidize, but they fuse. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations The Egyptians classified metals under two heads--namely, the noble metals, as gold, electrum, and silver; and the base metals, as copper, iron, lead, and, at a later period, tin. Manual of Egyptian Archaeology and Guide to the Study of Antiquities in Egypt By your good leave, my most profound and bold sir, Dan's noble metal, Sherry base; So Dan's the better, though the less, An ounce of gold’s worth ten of brass, dull pedant! The Poems of Jonathan Swift, D.D., Volume 2 It is well said; but the last letter to Frank Scott is scarcely of a noble metal. Memoir of Fleeming Jenkin In short, we use the noble metals never because of, but now and then in spite of, their costliness. Freeland A Social Anticipation In the latter flame, the salts of the noble metals are reduced to the metallic state, and the charcoal is covered with the bright metal. A System of Instruction in the Practical Use of the Blowpipe Being A Graduated Course Of Analysis For The Use Of Students And All Those Engaged In The Examination Of Metallic Combinations We need only confine ourselves to the discovery of aluminum, to which the energy and inventive genius of our confrère, Henry Deville, soon gave a place near the noble metals. Scientific American Supplement, No. 362, December 9, 1882 Perhaps we are also made of noble metal, but we are eaten up with rust while they are hardened in the battle of life. So Runs the World There was so little to go on, certainly nothing written, whereas others had such magnificent idols of wood, ivory, noble metals, and fine gemstones crafted by the gifted hands of talented men. Si'Wren of the Patriarchs Prosperity followed, commerce with the world began, by and by rich mines of the noble metals were opened, immigrants flowed in, capital likewise. Following the Equator, Part 2 Must not this situation have had its influence on him before he learned to make higher demands on himself, and by digging deeper in his own mind, discovered the richest veins of a noble metal? Characters of Shakespeare's Plays Of humility he knew but little, least of all where his affections were concerned, but there was the ring of noble metal in his self-assertion. Demos A natural alloy of gold containing 20 per cent silver, termed electrum, is the lowest grade of the noble metal. Getting Gold: a practical treatise for prospectors, miners and students |
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