tuning
/ˈtjuːnɪŋ/noun
mass noun
1- 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。
1.1
- 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.
合奏定音有时不准, 独奏又常缺乏自信。
1.2
- 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。
1.3
- the facility on a radio allowing for the reception of different stations, frequencies, or wavelengths（收音机的）调谐。
1.4
- Electronics the variation of the resonant frequency of an oscillatory circuit【电子】（振荡电路的）调谐。