oscillation
noun [ C or U ] uk/ˌɒs.ɪˈleɪ.ʃən/ us/ˌɑː.səlˈeɪ.ʃən/
()
摆动，摇摆
repeated movement from one position to another
The oscillations of the needle were so slight they were hard to detect. 指针的摆动非常轻微，很难察觉。
formal（感情或看法的）摇摆不定
repeated change from one feeling or opinion to another
His mood never settled; there was a continuous oscillation between two extremes. 他的心情从未安定下来; 总是在两个极端之间摇摆不定。
physics specialized（波或电流的）振荡
a regular change in strength or direction in a wave or electric current
Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas. 声音是一种机械波，是通过固体、液体或气体传播的压力振荡。
- More examples
- "Nictation" is an oscillation in the diameter of the pupil which shows the scanner that a real person is there and not just a photo of an eye.
- Mealtimes strongly influence this daily oscillation in blood sugar, or glucose, concentrations.
- After much oscillation, the pound is unchanged against the dollar.
- One study found sudden bursts of high-frequency 40 Hz oscillations (gamma waves) in the brain appearing just prior to moments of insight.
- Phase difference can be measured as a fraction of an oscillation.