[mass noun]the action or process of tuning something 定调,调音 an electronic instrument requires no tuning. 电子乐器无须调音。 ■the extent to which a musical instrument, performance, or ensemble is in tune 起音,定音(乐器、演出、合唱、合奏的合调程度) at times the tuning is uncertain, and the solos often lack conviction. 音调有时不准,独奏常缺乏自信。 ■a particular key or set of pitches to which an instrument, especially one with strings, is tuned (尤指弦乐器的)音调 E-flat tuning. 降E调。 ■the facility on a radio allowing for the reception of different stations, frequencies, or wavelengths (收音机的)调谐 ■(Electronics)the variation of the resonant frequency of an oscillatory circuit (电子)(振荡电路的)调谐