波动 1.(不稳定) undulate; fluctuate; unsettle; surge; rise and fall 情绪波动 in an anxious state of mind; 蔬菜价格随气候波动。 the price of vegetables fluctuates according to the weather.2.[物理学] wave (motion); wave propagation; undulation; fluctuation; fluctuating; undulatory; 波动变量 wave variable; 波动电流 undulating current; fluctuating current; 波动阀 flutter valve; 波动方程 wave equation