| 释义 |
keyed, a.|kiːd|
[f. key n.1 or v. + -ed.]
1. Of a musical instrument: Furnished with keys. keyed bugle = key-bugle.
1796Burney Mem. Metastasio II. 320 note, Pieces for keyed-instruments. 1806J. W. Callcott Mus. Gram. ii. i. 99 Both which are, upon Keyed Instruments, performed with the same Keys. 1849Longfellow Kavanagh xxix, Silas, who breathed his soul out upon the air of summer evenings through a keyed bugle.
2. In carpentry, engineering, etc.: Secured, fastened, or strengthened by means of a key.
1823P. Nicholson Pract. Build. 587 Keyed-dado, dado secured from warping by bars grooved into the back. 1874Thearle Naval Archit. 79 A keyed and riveted scarph, joining two arms.
3. Of an arch: Constructed with a keystone.
1841W. Spalding Italy & It. Isl. I. iv. 155 In the time of Pericles..we discover in at least one of the great temples of Greece the keyed arch. Ibid. v. 183 The keyed arch was introduced for strength.
4. keyed-up: see key v. 3 a.
5. Electronics.
a. Of electronic equipment or devices: provided with a means by which it may be rapidly switched on or off, or ‘keyed’ (see key v. 6).
b. Of a signal: intermittent, abruptly stopped and started, as in telegraphic transmissions.
1942Proc. IRE XXX. 15/1 Among the novel features of the design [of the television camera] are..keyed diodes for black-level setting. 1943Gloss. Terms Telecomm. (B.S.I.) 65 Type A1 waves (keyed continuous waves), continuous waves which are keyed according to a telegraphic code. 1943F. E. Terman Radio Engineers' Handbk. ix. 630 Keying causes the load placed on a power-supply system by the keyed stages to change abruptly. 1961Gray & Graham Radio Transmitters vi. 138 Frequency variation of a keyed oscillator..can be reduced by making the oscillator frequency independent of supply voltages. |