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单词 oscillating
释义

oscillatingadj.

Brit. /ˈɒsᵻleɪtɪŋ/, U.S. /ˈɑsəˌleɪdɪŋ/
Origin: Formed within English, by derivation. Etymons: oscillate v., -ing suffix2.
Etymology: < oscillate v. + -ing suffix2.
1.
a. That swings or moves to and fro; vibrating.
ΘΚΠ
the world > movement > motion in specific manner > alternating or reciprocating motion > oscillation > [adjective]
oscillatory1670
oscillating1743
oscillant1857
1743 W. Emerson Doctr. Fluxions 294 If the oscillating Body is not a Globe.
1835 W. Kirby On Power of God in Creation of Animals I. iv. 146 These oscillating plants owe their existence to different species of animalcules.
1899 T. C. Allbutt et al. Syst. Med. VI. 681 When the patient's eyes are closed, he may walk in an uncertain oscillating fashion.
1929 Q. Jrnl. Econ. 44 64 It has been held that competition between two sellers will result in..a perpetually oscillating price.
1994 W. Maples & M. Browning Dead Men do tell Tales v. 64 Anatomical Stryker saws, whose oscillating blade is designed to cut through bone, but not flesh.
b. Designating or relating to a machine characterized by the oscillatory motion of a part or parts.Originally spec. with reference to a steam engine having a cylinder mounted on trunnions which oscillated though a small arc so that the piston rod could follow the movements of the crank.
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society > occupation and work > equipment > machine > parts of machines > [adjective] > oscillating
oscillating1821
1821 A. Manby Specif. Patent 4558 4 A longitudinal section of the oscillating engine.
1870 Public Opin. 16 July 81 The turning gear consists of a small supplemental oscillating cylinder.
1882 Rep. Precious Metals (U.S. Bureau of Mint) 21 A Huntington oscillating mill is used, crushing about 7 tons of ore per day.
1969 E. P. Anderson Home Appliance Servicing (ed. 2) xix. 307 The oscillating mechanism consists essentially of a worm gear on the motor shaft that engages a gear on a short jack shaft.
1989 Miller's Collectables Price Guide 1989–90 449/3 A single oscillating cylinder vertical reversing over-crank stationary engine.
2. Of an electric current: undergoing very rapid periodic reversal of direction; (also) characterized by or produced by such a current. Cf. oscillate v. 1c.Oscillating as used of a current normally implies a much higher frequency than alternating and also a different origin (see oscillator n. 3a).
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the world > matter > physics > electromagnetic radiation > electronics > electronic phenomena > [adjective] > oscillating
oscillatory1853
oscillating1888
the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > [adjective] > oscillating
oscillating1920
oscillatory1948
1888 Science 13 July 18/2 We have thus mentioned two causes of obstruction met with by rapidly oscillating currents trying to traverse a metal rod.
1906 A. E. Kennelly Wireless Telegr. viii. 94 (heading) Energy of electric oscillations, or oscillating currents, set up in a vertical receiver.
1920 E. W. Stone Elem. Radiotelegr. xi. 44 If two oscillating circuits containing inductance and capacity be..coupled together, they act very differently than when they are allowed to oscillate by themselves.
1948 A. L. Albert Radio Fund. x. 386 Variations in the plate output circuit will not be reflected back into the control-grid oscillating circuit.
1974 ‘I. Drummond’ Power of Bug xi. 166 The tiny transmitter..emitted a high, oscillating signal on ultra short wave.
1995 Kay's Catal. Autumn–Winter 1017/3 Quartz crystal and micro computer chip combine for oscillating powerpulse supply.
3. Mathematics. Of a series or function: increasing and decreasing without tending to a limit or diverging as successive terms are taken (in the case of a series) or as the variable tends to infinity (in the case of a function).
ΘΚΠ
the world > relative properties > number > algebra > [adjective] > relating to expressions > relating to functions
generating1671
exponential1704
discontinuous1803
functional1806
odd1812
periodic1820
syzygetic1850
convex1858
graphometric1865
polycyclic1869
subrational1875
synectic1876
variational1879
polyhedral1881
holomorphic1886
tropical1887
Gudermannian1888
monogeneous1888
monotonous1890
oscillating1893
monotonic1901
monotone1903
orthogonalized1909
schlicht1925
concave1942
deconvolved1974
unate1978
1893 Proc. Royal Soc. 54 121 In some physical problems divergent series are actually used for calculation. A notable example is Stokes's divergent formula for the oscillating function Jn(x).
1897 Amer. Math. Monthly 4 302 Euler concluded that the sum of the oscillating series 1 −1 +1 −1 +1 −1 … = ½, for the reason, that by stopping with an even number of terms the sum is 0, and by stopping with an odd number of terms the sum is 1.
1973 D. G. Ball Introd. Real Anal. iii. 59 Consider the sequence 21/ 2, −11/ 2, 21/ 4, −11/ 4, 21/ 8, −11/ 8, 21/ 16, −11/ 16,... This sequence is bounded and oscillating.
1992 Nature 17 Dec. 658/1 The summations give rise to a small value because the scattering factors and the exponents are oscillating complex functions in the transform.

Compounds

oscillating universe n. Astronomy a model of the universe in which expansion is followed by contraction, explosion, and expansion once more, in an infinite cycle.
ΚΠ
1933 H. P. Robertson in Rev. Mod. Physics 5 74/1 Such a universe we refer to as oscillating and denote it by O.]
1933 Rev. Mod. Physics 5 76/1 Einstein's recent proposal to set λ=0 would restrict us to the oscillating universes (type O) and the monotonic universes of the first kind.
1968 R. E. W. Maddison tr. P. Muller Conc. Encycl. Astron. 90/1 Other cosmological models exist in which alternate expansion and contraction can take place giving rise to a pulsating or oscillating universe.
1997 Nature 3 Apr. 448/3 In a high-density Universe, gravity eventually stops the expansion. The Universe then collapses, and if the collapse ends in a bounce and another expansion, we have an oscillating Universe.
This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).
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adj.1743
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