| 单词 | alloy |
| 释义 | alloy (once / 1770 pages) nv You may have heard of aluminum alloy on a car. What that means is that there is another metal mixed in with the aluminum, to save money and/or to strengthen the wheels. The wheels are an alloy (a mix), rather than pure. In addition to indicating a dilution of one metal with another, alloy can refer to the dilution of a feeling or a quality. Knowing that you look awesome in your Halloween costume would be an alloy to the embarrassment of showing up to a party where you are the only one in a costume. WORD FAMILYalloy: alloyed, alloying, alloys+/alloyed: unalloyed/unalloyed: unalloyedly USAGE EXAMPLESThe ballroom’s gilt is composition leaf, a copper alloy with only trace amounts of gold, a variation of which gilders call brass leaf. New York Times(Dec 22, 2016) Most tellingly, Mr Larsen’s samples contained iron and nickel alloys common in micrometeorites, but rare in Earth-bound rocks because these metals oxidise rapidly. Economist(Dec 10, 2016) An Auburn University engineering professor in Alabama worked on the precision measurements necessary to reformulate the engine’s aluminum alloy. Wall Street Journal(Dec 12, 2016) 1n a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten brass is an alloy of zinc and copper Syn|Hypo|Hyper metal heavy metal a metal of relatively high density (specific gravity greater than about 5) or of high relative atomic weight (especially one that is poisonous like mercury or lead) 18-karat goldan alloy that contains 75 per cent gold 22-karat goldan alloy that contains 87 per cent gold oreide, oroidealloy of copper and tin and zinc; used in imitation gold jewelry Alnicotrade name for an alloy used to make high-energy permanent magnets; contains aluminum and iron and nickel plus cobalt or copper or titanium amalgam, dental amalgaman alloy of mercury with another metal (usually silver) used by dentists to fill cavities in teeth; except for iron and platinum all metals dissolve in mercury and chemists refer to the resulting mercury mixtures as amalgams fusible metalan alloy with a low melting point and used as solder and in safety plugs and sprinkler fuses electruman alloy of gold and silver pewterany of various alloys of tin with small amounts of other metals (especially lead) pinchbeckan alloy of copper and zinc that is used in cheap jewelry to imitate gold pot metalan alloy of copper and lead used especially for making large pots solderan alloy (usually of lead and tin) used when melted to join two metal surfaces white golda pale alloy of gold usually with platinum or nickel or palladium type metalan alloy of tin and lead and antimony used to make printing type bearing metal, white metalan alloy (often of lead or tin base) used for bearings Babbitt metal, babbittan alloy of tin with some copper and antimony; a lining for bearings that reduces friction Britannia metalan alloy similar to pewter Carboloyan alloy based on tungsten with cobalt or nickel as a binder; used in making metal-cutting tools steelan alloy of iron with small amounts of carbon; widely used in construction; mechanical properties can be varied over a wide range cheoplastic metalany alloy that fuses at low temperatures and can be used molding artificial teeth copper-base alloyany alloy whose principal component is copper dental goldan alloy of gold used in dentistry Duraluminan aluminum-based alloy Inconela nickel-base alloy with chromium and iron; used in gas-turbine blades Invaran alloy of iron and nickel having a low coefficient of thermal expansion; used in tuning forks and measuring tapes and other instruments nickel alloy, nickel-base alloyan alloy whose main constituent is nickel German silver, nickel silvera silver-white alloy containing copper and zinc and nickel pyrophoric alloyan alloy that emits sparks when struck or scratched with steel; used in lighter flints shot metalan alloy that is 98% lead and 2% arsenic; used in making small shot Stellitea very hard alloy of cobalt and chromium with cobalt as the principal ingredient; used to make cutting tools and for surfaces subject to heavy wear sterling silvera silver alloy with no more than 7.5% copper tambac, tombac, tombakan alloy of copper and zinc (and sometimes arsenic) used to imitate gold in cheap jewelry and for gilding Wood's alloy, Wood's metala fusible alloy that is half bismuth plus lead, tin, and cadmium; melts at about 160 degrees Fahrenheit slug, type sluga strip of type metal used for spacing alloy steelsteel who characteristics are determined by the addition of other elements in addition to carbon brassan alloy of copper and zinc bronzean alloy of copper and tin and sometimes other elements; also any copper-base alloy containing other elements in place of tin cupronickela 60/40 alloy of copper and nickel hard soldersolder that contains copper; melts at a relatively high temperature; used for brazing silver soldera solder that contains silver soft soldersolder that melts at a relatively low temperature Monel metal, Monell metalan alloy of nickel and copper and other metals (such as iron and/or manganese and/or aluminum) aluminium bronze, aluminum bronzean alloy of copper and aluminum with high tensile strength and resistance to corrosion austenitic steelsteel that has enough nickel and chromium or manganese to retain austenite at atmospheric temperatures case-hardened steelsteel with a surface that is much harder than the interior metal carbon steelsteel whose characteristics are determined by the amount of carbon it contains crucible steelsteel made by the mixture of molten wrought iron, charcoal, and other substances in a crucible Damascus steel, Damask steela hard resilient steel often decorated and used for sword blades chisel steelsteel used in making chisels Eureka, constantanan alloy of copper and nickel with high electrical resistance and a low temperature coefficient; used as resistance wire ferroceriuma pyrophoric alloy of iron with cerium; used for lighter flints hard steelsteel with more than 0.3% carbon medium steelsteel with 0.15-0.3% carbon low-carbon steel, mild steel, soft-cast steelsteel with less than 0.15% carbon misch metala pyrophoric alloy made from a mixture of rare-earth metals Nichromean alloy of nickel and chromium with high electrical resistance and an ability to withstand high temperatures; used for resistance heating elements Permalloyan 80/20 alloy of nickel and iron; easily magnetized and demagnetized quenched steelsteel that has been hardened by immersing it in water or oil to cool it structural steela strong steel that is rolled into shapes that are used in construction mixture (chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding) 2n the state of impairing the quality or reducing the value of something Syn|Hyper admixture impureness, impurity the condition of being impure 3v make an alloy of Hyper blend, coalesce, combine, commingle, conflate, flux, fuse, immix, meld, merge, mix mix together different elements 4v lower in value by increasing the base-metal content Syn|Hyper debase devalue lower the value or quality of |
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