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- A wave that repeats, like the one above, is called a periodic wave. 如上图所示的周期性的波，称之为周期波。
- The new periodic wave solutions for cubic nonlinear Schr dinger equation[J]. 引用该论文 豆福全;石玉仁;孙建安;段文山;吕克璞;洪学仁.
- Of or relating to the component of lowest frequency of a periodic wave or quantity. 基波的周期波或周期量的最低频率的分力的或与此有关的
- In addition to amplitude and wavelength, a periodic wave is characterized by its frequency. 除了振幅和波长，周期波有它自己的频率。
- Using the modified Jacobi elliptic function expansion method,the periodic wave solutions for the coupled nonlinear Klein-Gordon equations are obtained. 利用修正的Jacobi椭圆函数展开方法;获得了一类耦合非线性Klein-Gordon方程组的周期解.
- Meanwhile, domestic price level still is in low move smoothly, the periodic wave motion that economy grows is changed infirmly apparently. 与此同时,国内物价水平仍在低位平稳运行,经济增长的周期波动明显弱化。
- Under various parameter conditions, all exact explicit formulas of solitary wave solutions and kink (anti-kink) wave solutions and uncountable infinity many periodic wave solutions are listed. 在固定的参数条件下给出广义水波方程组的孤立波、扭结（反扭结）波解的精确表达式，并证明该方程组存在不可数无穷多个周期波解。
- Key words: Output of timber product, Periodical wave, Early warning, Spectral analysis, Periodogram. 第一作者：胡永宏，男，1966年生，陕西韩城人，副教授。主要研究方向：时间序列分析与应用。
- Chang, H.H, Huang, C.J., and Dong, C.M. (2004) Interaction of periodic waves and a submerged porous breakwater (2004/5 submitted to Coastal Engineering). 黄清哲、谢正伦、郑友诚、尹孝元、许世盛、蔡玫谖（2004）土石流地声特性之实验研究，中国土木水利学刊，第十六卷，第一期，第53-63页。
- Adapting to all these periodic waving features of different economic activities,Chinese GDP growth is just on the overspreading stage of its short-term ... 这四类周期的性质或所反映的经济活动是不同的 ,但又存在密切内在联系。
- Driver to Non- sinusoidal Periodic Wave 周期非正弦波的激励
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- (physics) the maximum displacement of a periodic wave. （物理学）周期波偏离平衡位置的最大值。
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
