| 单词 | magnet |
| 释义 | magnet (once / 363 pages) n A magnet is a piece of metal with a strong attraction to another metal object. The attraction a magnet produces is called a "magnetic field." You might cover the front of your refrigerator with magnets, which stick to its metal surface. Other kinds of magnets are even more powerful, strong enough to pick up entire cars, for example. Most magnets are made of iron or an iron alloy, and magnets are at the heart of many common items like cassette tapes, credit cards, toys, and compasses. WORD FAMILYmagnet: magnetic, magnetise, magnetize, magnets+/demagnetise: demagnetisation, demagnetised, demagnetising/demagnetize: demagnetization, demagnetized, demagnetizes, demagnetizing/magnetic: magnetically, magnetism, nonmagnetic/magnetise: demagnetise, magnetisation, magnetised, magnetises, magnetising/magnetism: magnetisms/magnetize: demagnetize, magnetization, magnetized, magnetizes, magnetizing USAGE EXAMPLESTo avoid the risk, the agent offers a simple solution: “Don’t buy wildlife. Buy a magnet, buy a T-shirt.” Washington Post(Dec 19, 2016) Using magnets, they are able to snag just a few of the newly created anti-atoms into a vacuum before they get obliterated by matter. Washington Post(Dec 20, 2016) Corralled by giant magnets, the electrons travelling around them emit radiation ranging in frequency from the infrared to X-rays. Economist(Dec 20, 2016) 1n (physics) a device that attracts iron and produces a magnetic field Hypo|Hyper bar magnet a magnet in the form of a bar with magnetic poles at each end electromagneta temporary magnet made by coiling wire around an iron core; when current flows in the coil the iron becomes a magnet field magneta magnet that provides a magnetic field in a dynamo or electric motor magnetic needlea slender magnet suspended in a magnetic compass on a mounting with little friction; used to indicate the direction of the earth's magnetic pole paramagnetmagnet made of a substance whose magnetization is proportional to the strength of the magnetic field applied to it permanent magnet, static magneta magnet that retains its magnetism after being removed from a magnetic field solenoida coil of wire around an iron core; becomes a magnet when current passes through the coil magnetic headan electromagnet (as on a tape recorder) that converts electrical variations into magnetic variations that can be stored on a surface and later retrieved stud findera small permanent magnet in a metal container; when the magnet clicks against the container it indicates that the magnet is directly over an iron nail that holds the wallboard to a stud loadstone, lodestonea permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically device an instrumentality invented for a particular purpose 2n a characteristic that provides pleasure and attracts Syn|Hypo|Hyper attracter, attraction, attractive feature, attractor attention a general interest that leads people to want to know more tourist attractiona characteristic that attracts tourists enhancer, foilanything that serves by contrast to call attention to another thing's good qualities characteristic, feature a prominent attribute or aspect of something |
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