oscillation

• 指在两种状态之间来回运动的过程，或指某一量相对于平均值发生的规律性周期变化，也可指一个完整的周期性循环。

A noun referring to the process of moving back and forth between states, a regular periodic variation in value about a mean, or a single complete cycle of a periodically repeated phenomenon.

1. Regular back-and-forth movementB2formalscientific

   The act of moving or swinging back and forth in a regular rhythm.

   振荡

   • The pendulum's oscillation was steady and predictable.
   • The oscillation of the bridge was measured by engineers.
   • The oscillation of the spring decreased over time due to friction.

   同义词rockingswingto and frovibration

2. Periodic variation in physicsC1formalscientific

   A regular periodic variation in value about a mean, such as in a wave or alternating current.

   振动

   • The oscillation of the electrical signal was displayed on the oscilloscope.
   • Sound waves are created by the oscillation of air particles.
   • The frequency of oscillation determines the pitch of the sound.

   同义词fluctuationpulsationundulationvibration

3. Fluctuation between statesC1formal

   The process of fluctuating or alternating between different states, opinions, or conditions.

   波动

   • The oscillation between hope and despair was emotionally draining.
   • Political oscillation between two parties is common in democracies.
   • The market showed oscillation between bullish and bearish trends.

   同义词alternationfluctuationinstabilityswingingundulationvacillationvariationwavering

   反义词constancystabilitysteadiness

4. Single cycle of a repeated phenomenonC1formalscientific

   A single complete execution of a periodically repeated phenomenon.

   一次振荡

   • Each oscillation of the wave took exactly two seconds.
   • The clock's pendulum completes one oscillation per second.
   • The number of oscillations per minute determines the engine's speed.

   同义词cycle