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

• Moreover, the influence of the geometric parameters on efficiency and speed fluctuation of the roller drives is discussed.
  并且论文也讨论了滚筒的几何参数对效率和速度变化的影响。
• 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。
• Economic crisis or periodic economic fluctuation is a main trait of market economy.
  经济危机或经济的周期波动是市场经济的主要特征之一。
• Traditional macroeconomics believes that short-run fluctuation had no effect on the long-run economic growth.
  传统的宏观经济学认为，短期波动不会对经济的长期增长造成影响。
• The aridity and the humidity effected the fluctuation of lake level and controlled the basin filling and sequence development.
  干旱和潮湿气候影响了湖平面波动，控制着层序充填和准层序叠置形式；
• 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。
• This is an11-year fluctuation in sunspot numbers.
  这是一个11岁的波动太阳黑子数。
• The amplitude of wall temperature fluctuation is larger than that of fluid temperature oscillation.
  流量的波动又引起了管壁温度和流体温度的周期性波动；
• The Central Bank successfully curbed the economic fluctuation.
  央行成功抑制了这样的经济波动。
• A demodulating strain method that avoids light source's fluctuation and environmental factors is put forward.
  提出了一种不需要双光路信号就减小了光源波动及环境因素对测量的影响的解调应力方法。