| 释义 |
noiseless, a.|ˈnɔɪzlɪs|
[f. as prec. + -less.]
a. Silent, quiet; making no stir or commotion.
1601Shakes. All's Well v. iii. 41 Th' inaudible, and noiselesse foot of time. 1605― Lear iv. ii. 56 France spreads his banners in our noiseless land. a1667Cowley On the late Civil War Wks. (Grosart) I. p. cxxxvii, His Treasons restless, and yet noiseless Heart. 1699Garth Dispens. 11 Midnight Silence guards the noiseless Doors. 1750Gray Elegy 76 They kept the noiseless tenour of their way. 1784Cowper Task iv. 346 The wain..in its sluggish pace, Noiseless, appears a moving hill of snow. 1816Byron Ch. Har. iii. lxxxv, This quiet sail is as a noiseless wing To waft me from distraction. 1853Kane Grinnell Exp. (1856) xxvii. 221 It is no fun..to sit motionless and noiseless as a statue, with a cold musket in your hands. 1875Howells Foregone Conclusion 1 The canal, where he could see the noiseless black boats meeting and passing.
b. Characterized by a virtual absence of noise (sense 7).
1931A. Nadell Projecting Sound Pictures xiv. 244 The recently developed ‘noiseless recording’ is achieved by passing a ‘bias’ current through the value ribbons, in addition to the usual speech current. The effect of the bias is to eliminate the former spacing of 2, or 1½ mils, and to keep the ribbons always closed when no speech current is passing. 1944Phil. Mag. XXXV. 394, r{caret} must be regarded as a noiseless shunting resistance. 1957Sci. Amer. Feb. 82/2 The maser would..be useful in astronomy and cosmology. As a noiseless amplifier it would eliminate the noise generated in the circuits of radio telescopes. 1972J. M. Taylor tr. Meyer & Neumann's Physical & Applied Acoustics ix. 351 In variable-area recording..the bright side of the sound track is darkened for small amplitudes in the region that does not contribute to sound generation (noiseless recording). |