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 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。
• Even a minor fluctuation in the water temperature can affect the fish.
  水温即使有微小的波动，也会对鱼类产生影响。
• This is an11-year fluctuation in sunspot numbers.
  这是一个11岁的波动太阳黑子数。
• Once we have a function, it is much easier to filter on different data sets and fluctuation thresholds.
  一旦我们拥有了一个函数，对不同的数据集和波动临界点进行过滤就简单多了。
• We discover they have a relationship between the exchange rate fluctuation and the fluctuating price of real estate.
  通过二者的共性和特性的分析，发现汇率波动与房地产价格波动是有一定关联性的。
• 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。
• The Fluctuation of China's Macro-economy: Internal Adjustment or External Shocks?
  中国宏观经济波动：内部调整还是外部冲击？
• 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。
• In changeful wind conditions and load fluctuation maximizes the stability of shaft output.
  在风力和负载变化的情况下，能最大限度保持机械轴的输出稳定性。
• 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；