| 单词 | eddy-current brake |
| 释义 | > as lemmaseddy-current brake eddy-current n. a current of electricity induced in places where such currents are undesirable and cause waste of energy; also eddy-current brake, eddy loss. ΚΠ a1594 J. White in R. Hakluyt Princ. Navigations (1600) III. 291 From the Cape to Virginia..are none but eddie currents. 1887 Jrnl. Soc. Telegraph-engineers & Electricians 16 65 The coil is surrounded..by a circular pole piece, cut away at one point to hinder eddy-currents. 1892 W. P. Maycock Electr. Lighting i. vi. 158 Most armatures of direct current machines have iron cores, and the revolution of the cores in the magnetic field would..cause currents to be induced in the core... These currents [are] called foucault or eddy currents. 1930 Engineering 6 June 724/3 Three systems were in use, operated, respectively, by hydraulic, pneumatic and electro-magnetic (eddy currents in the wheels) means. 1934 Webster's New Internat. Dict. Eng. Lang. Eddy-current brake. 1940 Chambers's Techn. Dict. 281/1 Eddy-current loss. 1943 Electronic Engin. 16 194 If a solid conductor is replaced by a number of insulated strands..it appears obvious at first sight that the eddy current losses must be reduced. < as lemmas |
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