单词 | commutate |
释义 | commutatev.ΘΚΠ the world > time > change > change [verb (intransitive)] wendeOE braidOE change?c1225 turnc1300 remue1340 varyc1369 flitc1386 strange1390 alter?a1425 degenerate1548 variate1605 commutatea1652 veer1670 mutate1818 reschedule1887 switch1906 to change up1920 a1652 R. Brome Love-sick Court ii. i. 106 in Five New Playes (1659) I still am thine and cannot commutate, I am as certain to thee as thy fate. 2. transitive. To regulate (the direction of an electric current); = commute v. 6. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > operation of machinery > regulate current [verb (transitive)] commute1884 commutate1890 1890 [see commutating adj. and n. at Derivatives]. 1893 W. P. Maycock Electr. Lighting ii. vii. 228 There is a similarity in the methods of commutating the currents. Derivatives ˈcommutated adj. ΚΠ 1896 D. C. Jackson & J. P. Jackson Alternating Currents II. 624 Commutated Armature. The armature may be wound with the coils so arranged that their conductors are in series when starting and in parallel when running. ˈcommutating adj. and n. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > operation of machinery > [noun] > regulation of current commutation1876 commutating1890 the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > operation of machinery > [adjective] > regulating current commutating1890 1890 W. James Princ. Psychol. I. 26 It is like the great commutating switch-board at a central telephone station. 1896 D. C. Jackson & J. P. Jackson Alternating Currents II. 261 When the commutating point is reached during the rotation of the commutator, the trailing brushes move on to intermediate segments. 1916 Standardization Rules Amer. Inst. Electr. Engin. 22 Commutating Machines. 1962 Newnes Conc. Encycl. Engin. 144/2 (heading) E.M.F. in commutating coils. This entry has not yet been fully updated (first published 1891; most recently modified version published online December 2019). < |
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