The rapid “postshock” bounce of the population growth rate in the late 17th century was related to the dramatically reduced population size and the coupled increase of food supply per capita.
之后,在17世纪晚期出现的人口增长率“反弹”,其原因在于人口大幅度下降后基数规模显著缩小,从而人均食物资源相对增大。
The results may provide a helpful reference for better understanding the coupled thermo-mechanical behaviors of deep rocks.
研究成果对于深部岩体的热–力耦合特性研究具有一定参考意义。
Therefore, it is of great importance to study the coupled dynamic characteristics of a mill main drive system for keeping efficient and reposeful production.
因此,研究轧机主传动系统的动力学耦合特性,对于抑制轧机振动、保证高效平稳地生产具有重要的理论意义和实用价值。
The sea surface turbulent heat fluxes, as the key subjects of air-sea interaction, are very important for understanding the coupled atmosphere-ocean models and oceanic heat and freshwater budget.
海-气间湍流热通量是研究海气相互作用的重要课题,深刻理解海气间湍流热交换有助于进一步耦合大气海洋模式,也有助于进一步研究海洋热量和淡水收支等科学问题。
The governing equation of the coupled stiffness problem is derived after partition.
给出分解后耦合问题的控制微分方程;
The cylindrical lens ACTS as an important role in the coupled optical system of DPL.
在二极管泵浦固体激光器耦合光学系统中,柱面透镜起着非常重要的作用。
Influences of fiber core radium and offset on the coupled efficiency are discussed in detail.
详细分析了光纤芯径和偏移对光纤-波导耦合效率的影响。
Within the coupled resonant frequency region, the negative index of refraction can be achieved.
在负的磁导率和负的介电常数重叠的频率区域,能得到一个负的折射系数。
And the system response for the coupled case and the function of the external force are offered.
并给出刚柔耦合情形下且受外力作用时的系统响应。
We discuss in more detail the application of the coupled mode formulas to scalar waveguide deformations.
我们将详细讨论耦合模公式对标量波导畸变的应用。
The spectral characteristics of a long period fiber grating is analyzed by using the coupled mode theory.
本文应用耦合模理论分析了长周期光栅的光谱特性。
So it is necessary to develop the coupled model of heat transfer and stress for continuous casting billet.
所以,开发连铸坯凝固传热与应力分析耦合模型是非常必要的。
Approximate solutions for the coupled non-linear equations are obtained for the velocity and the temperature.
求得了速度和温度的耦合非线性方程组的近似解。
This method obviously simplifies the derivation of formulas, and obtains the coupled equations with lower order.
此方法大大减少了公式推导量,而且得到的是降阶的耦合方程组。
Thus, the coupled shear walls are simplified to coupled shear walls which only include stiffening coupling beams.
将带强连梁和弱连梁的双肢剪力墙简化为仅带强连梁的双肢剪力墙。
We have obtained the coupled-mode equation by using the eigenvalues and eigenvectors, and given a theoretical analysis.
利用固有值和固有矢量的方法解出了耦合模方程,并对其进行理论性分析。
By simplifying the coupled equations of DFG in waveguides, we provide analytical expressions of the conversion efficiency.
通过对波导中差频耦合方程的简化,推导出了转换效率的解析表达式。
This paper addresses the adaptive control and synchronization of the coupled dynamos system with unknown system parameters.
讨论了耦合发电机系统的自适应控制和参数未知时的自适应同步问题。
Finally, based on this model and the coupled olefiant peak period, the accumulation conditions of oil and gas are analyzed.
根据这一模式,从构造与生油配套关系的角度分析了油气聚集条件。
The modal frequency response and its sensitivity analysis for the coupled system using the direct method and the eigenmodes.
分别采用直接法和模态叠加法,计算声场-结构耦合系统的声压响应水平及其敏度。
The variation of soil water, salinity and temperature in the field makes the coupled transport processes of them very complicated.
田间土壤水分、盐分和温度变化使水、盐、热耦合迁移的过程极其复杂。
Overlapping the coupled activities is an important strategy to implement concurrent engineering in complex product development process.
耦合任务的重叠执行是复杂产品实施并行工程的一种重要方式。
Firstly, the comparison of numerical analysis results and the small signal analysis results is given based on the coupled mode equation.
首先从耦合模方程出发,比较了数值分析结果与小信号近似分析的结果。
The influence of the phase distribution function on the coupled impedance for a coupled cavity structure is investigated and calculated.
本文研究了耦合腔内场的相位分布函数对驻波场形和耦合阻抗计算的影响。
In this paper, several study methods on PMD are analyzed, such as Jones matrix, Stokes vector and the coupled nonlinear Schrodinger equation.
主要分析讨论了PMD的几种研究方法:琼斯矩阵法、斯托克斯空间法和耦合非线性薛定谔方程。
Based on the principle of soil-structure interaction, the coupled model is used to analyze the seismic responses of a shallow embedded tunnel.
文章在考虑了土体和结构的动相互作用基础上,采用耦合模型对浅埋隧道进行抗震分析。
The stationary consensus algorithm with communication delay was proposed to solve the coupled consensus problem of the second-order dynamic agents.
采用具有通信时延的静态一致性算法研究二阶动态个体的耦合一致性问题。
It is convenient to use finite element method to analyse the coupled problem of consolidation and deformation based on Biot's consolidation theory.
用有限单元法分析软土地基的固结与变形耦合问题可以为求解皮奥特固结方程提供方便。
In normal control stage, the coupled electric capacitors and fast reactive resources are controlled to guarantee the reserved fast reactive capacity.
在正常响应阶段协调控制并联电容器和快速无功源,以保证系统的快速无功备用容量。
In normal control stage, the coupled electric capacitors and fast reactive resources are controlled to guarantee the reserved fast reactive capacity.
在正常响应阶段协调控制并联电容器和快速无功源,以保证系统的快速无功备用容量。
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