| 单词 | alternating electric current |
| 例句 | But they usually employ the piezoelectric effect, whereby an alternating electric current causes them to vibrate if transmitters or, if receivers, to generate an electric current in response to vibration. Acoustic chatter 2015-07-09T04:00:00Z It uses alternating electric current to produce an oscillating magnetic field that then heats up a ferromagnetic pan. Food bytes: The kitchen goes digital 2013-11-25T01:06:29Z I propose to seek for the period by means of an electrical oscillator, or a source of alternating electric currents. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Consequently his line of action in the affairs of life was something in the nature of an alternating electric current. A Safety Match 2012-03-19T02:00:23.817Z The pole pieces of the coherer tube are made of iron, and they are enveloped in magnetising coils traversed by an alternating electric current. Hertzian Wave Wireless Telegraphy 2012-01-09T03:00:20.570Z He confirmed an opinion already previously expressed by Helmholtz and by Henry, that in some circumstances this discharge is oscillatory in nature, consisting of an alternating electric current of high frequency. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z Where it is available, an alternating electric current is much superior to a battery and break. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" The alternate rapid reversals of the magnetism in the magnetic field of an electromagnet, when excited by alternating electric currents, sets up eddy currents in every piece of undivided metal within range. Scientific American Supplement, No. 787, January 31, 1891 |
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