| 释义 |
oscillatory, a.|ˈɒsɪlətərɪ, əˈsɪlət(ə)rɪ|
[f. L. type *oscillātōri-us, f. oscillāre, oscillāt- to oscillate: see -ory.]
1. Characterized by swinging or moving to and fro like a pendulum.
1738Gray Let. in Poems (1775) 35 My motions at present..are much like those of a pendulum or (Dr. Longically speaking) oscillatory. I swing from Chapel or Hall home, and from home to Chapel or Hall. 1756Burke Subl. & B. iv. xxiii, A gentle oscillatory motion, a rising and falling. 1833Herschel Astron. xi. 367 The perihelia describe considerable angles by an oscillatory motion to and fro. 1879Proctor Pleas. Ways Sc. ii. 29 Like other movements tending to restore equilibrium, the atmospheric motions are oscillatory.
2. Electronics. Of a current: = oscillating ppl. a. 3. Of a circuit or device: capable of sustaining oscillations (oscillation 3).
1853Phil. Mag. V. 399 It is probable that many remarkable phenomena which have been observed in connexion with electrical discharges are due to the oscillatory character which we have found to be possessed when the condition..C2 is fulfilled. 1878Jrnl. Soc. Telegr. Engin. VII. 319 The discharge is oscillatory if R is less than 40,000 ohms, and continuous if it is greater than that amount. 1905Electrician Feb. 614/1 The effect on the rate of radiation, of varying the length of that portion of the air wire included in the coupled oscillatory circuit. 1948Slurzberg & Osterheld Essent. Radio x. 449 The essential parts of a vacuum-tube oscillator are (1) the oscillatory or tank circuit,..(2) a vacuum-tube amplifier, (3) a feedback circuit. 1971L. T. Agger Introd. Electr. 442 Calculate the natural frequency of an oscillatory circuit in which the inductance is 0·1 H and the capacitance is 10 µF. 1973J. Yarwood Electr. & Magnetism xi. 428 The oscillatory current obtained by the discharge of a capacitor through an inductance decays in amplitude with a logarithmic decrement of RT/2L.
3. Math. = oscillating ppl. a. 2.
1908T. J. I'A. Bromwich Introd. Theory Infinite Series i. 16 Since an oscillatory sequence always contains at least two convergent sub-sequences (those giving the extreme limits),..an oscillatory series can always be made to converge by grouping the terms in brackets. 1968H. M. Lieberstein Course in Numerical Anal. (1969) vii. 126 The error term is oscillatory and unbounded... In computation with small h one will see for small n very good answers being produced, but eventually as n..becomes larger, a ‘flowering’ will take place as the oscillatory error term takes over. |
