fluctuation

英 [ˌflʌktʃuˈeɪʃn]

美 [ˌflʌktʃuˈeɪʃn]

n.  波动，涨落，起伏

复数：fluctuations　

CET6TOEFLIELTS化学

BNC.6226 / COCA.8463

柯林斯词典

• VERB 变动;波动;上下浮动
  If somethingfluctuates, it changes a lot in an irregular way.
  1. Body temperature can fluctuate if you are ill.
     人患病后体温可能会上下波动。
  2. ...the fluctuating price of oil.
     油价的浮动

英英释义

noun

• the quality of being unsteady and subject to changes
  1. he kept a record of price fluctuations
  Synonym:wavering
• an instance of change
  Synonym:variation
• a wave motion
  1. the fluctuations of the sea

双语例句

• This paper studies the influence factors of the short-term fluctuation of cotton price in China by ARCH model.
  采用ARCH模型对我国国内短期棉花价格波动的影响因素进行了研究。
• This is an11-year fluctuation in sunspot numbers.
  这是一个11岁的波动太阳黑子数。
• Venation wave spectrum analysis finds out shape-structure change of mid-frequency signal fluctuation.
  脉络波谱图分析查明了中范围（频率）信号波动的形态结构变化。
• The influence of timing jitter and amplitude fluctuation of the sampling pulses is also investigated.
  同时我们还研究了采样光脉冲时间抖动和幅度抖动对光性能监测系统的影响。
• According to the characteristics of the human pulse signals, a pulse fluctuation frequency measurement system is designed.
  根据人体脉搏信号特征，本文设计了一种脉搏波动频率测量系统。
• In more than ten years the periodic fluctuation of China's macro economy operation is very obvious.
  近十几年来我国宏观经济运行周期性波动十分明显。
• The erratic fluctuation of market prices is in consequence of unstable economy.
  经济波动致使市场物价忽起忽落。
• In addition, the main reason of china's economic fluctuation in21st century is the stagnation of the transition in some key fields.
  当前中国仍存在经济剧烈波动的可能，其根源在于关键领域改革的滞后。
• This paper presents the on line measurement of size, concentration and velocity of pulverized coal with light fluctuation and correlation method.
  该文介绍了结合光脉动法和相关测速法同时在线测量煤粉粒径、浓度和速度的技术和装置。
• This ensures there's no electrical fluctuation within the car's systems and prevents a malfunction.
  这保证没有电波动车辆系统内，防止故障。