本文对双周期聚焦系统的磁路进行了系统的研究。
This paper studies systematically the magnetic circuit of a dual period focussing system.
财经是双周期刊，发行量有25万份，相信非常盈利。
The biweekly magazine, which has a circulation of 250, 000, is believed to be very profitable.
研究无限介质中矩形排列双周期圆柱形夹杂的纵向剪切问题。
An infinite elastic solid containing a doubly periodic rectangular array of cylindrical inclusions under longitudinal shear is dealt with.
最后，把它应用于高维变系数KP方程，获得了更多的双周期解。
Finally, our method is applied to higher dimensional KP equation with variable coefficients to obtain more doubly-periodic solutions.
双周期成分是可以精确预报的，负荷预报的误差主要来自混沌成分。
Since the double period component can be forecasted accurately, the load forecasting errors are chiefly caused by the chaotic component.
采用传输矩阵方法，研究了一维双周期厚度调制的多量子阱的透射谱。
The transmission spectrum of multiple quantum well structure with thickness-modulated dual-period was studied by means of transfer matrix method.
研究了含双周期分布圆形弹性夹杂的无限弹性平面在均匀拉伸和均匀温变下的弹性响应问题。
The elastic response of doubly-periodic arrays of circular elastic inclusions under the coupled action of uniformly mechanical loads and temperature loads is investigated.
研究发现：一维双周期光子晶体的光子带隙结构中在两光子晶体带隙交叠处具有很明显的两共振透射峰。
The investigation results show that two transmittance peaks exist at the crossover of the two photonic crystal PBG in 1-d dual-periodical photonic crystal.
研究无限介质中含双周期刚性线夹杂复合材料的反平面问题，其基本胞元含有四条不同长度的刚性线夹杂。
Composite materials with doubly periodic rigid line inclusions under antiplane shear in an infinite medium are discussed.
研究无限介质中含双周期刚性线夹杂复合材料的反平面问题，其基本胞元含有四条不同长度的刚性线夹杂。
Composite materials with doubly periodic rigid line inclusions under antiplane shear in an infinite medium are discussed.
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