单词 | squirrel-cage |
释义 | > as lemmassquirrel-cage squirrel-cage n. a cylindrical cage in which squirrels are confined, and which revolves as they move; also transferred a structure resembling this; spec. a form of rotor resembling a squirrel-cage, used in small electric motors (usually attributive). ΘΚΠ the world > food and drink > farming > animal husbandry > zoo > [noun] > squirrel-cage squirrel-cage1821 the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > motor > [noun] > rotor squirrel-cage1821 1821 W. Scott Kenilworth III. xiii. 265 We will never find them to-night amongst all these..squirrel-cages, and rabbit-holes. 1831 Ann. Reg. (1832) 323 He had a cage like a squirrel-cage, and two white mice in it. 1835 A. Ure Philos. Manuf. 163 Over this casing..a fan is placed,..which sucks out the dust through the wire or squirrel cage. 1887 W. Cory Lett. & Jrnls. (1897) 526 In a revolving squirrel-cage way. 1895 S. P. Thompson Polyphase Electr. Currents iv. 117 A solid cylinder of iron is improved [as a rotor] by surrounding it with a mantle of copper, or by a squirrel~cage of copper bars. 1906 G. F. Goodchild & C. F. Tweney Technol. & Sci. Dict. 706/1 Squirrel Cage Rotor, a rotor or revolving portion of an alternating current motor, built up of parallel bars of copper, joined together at their ends by a conducting rim or disc. 1910 Encycl. Brit. III. 580/1 This squirrel cage ensures that the several axes of the rollers keep parallel to the axis of the journal during the rolling motion. 1916 Standard. Rules Amer. Inst. Electr. Engin. 40 Squirrel-Cage and Amortisseur Windings. 1920 Whittaker's Electr. Engineer's Pocket-bk. (ed. 4) 552 Motors with squirrel-cage rotors require special features in the rotor to obtain large starting torque without large losses at normal load. 1928 G. E. Sterling Radio Man. 70 The terms ‘squirrel cage rotor’ and ‘wound rotor’ are often used to describe rotors; the first means the simple kind with conductors of plain bars of metal and no slip-rings or other moving contacts. 1972 Sci. Amer. Oct. 114/2 The air is circulated and exhausted by a system of squirrel-cage blowers. < as lemmas |
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