... line-profile variable 谱线轮廓变星 long term fluctuation 长期起伏 Lorentz line profile 洛伦兹谱线轮廓 ...
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Long-term Fluctuation [经管] 长期波动 ; 期波动
long term cyclic fluctuation 长周期波动
long-term trend fluctuation 长期波动趋势
Based on the data of a long term field experiment of dryland crops, this article points out that yield fluctuation, expressed in fluctuating coefficient, is a regular phenomenon in dryland farming.
根据旱地作物长期田间试验数据，论述了旱作农业生产中作物产量波动性是一个规律性现象，并用波动系数加以表述。
Next, this paper gives a description and demonstration of long-term trend and short-term fluctuation of China's monetary velocity.
其次，本文对我国货币流通速度的长期趋势和短期波动现象进行描述与论证。
The previous study of fluctuation of economic growth is limited to fluctuation of long-term economic growth and its research methods mainly use statistical knowledge.
以往的经济增长波动研究多局限于长周期经济增长波动研究，研究方法多采用统计学相关知识。
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