查询词典 principle of comparison

By means of the comparison principle and the method of upper and lower solution,the corresponding sufficient conditions under which the models have a solution or no solution are obtained. If other parameters are given,the controllable parameters such as the population of release and the times of impulsive harvest are estimated respectively.

基于比较定理和上下解方法，分别获得了模型有解或无解的充分条件，估计了相关可控参数，即脉冲投放模型中的投放量以及脉冲收获模型中的脉冲收获次数。

The thermometry principle and application of infrared thermometer are analyzed,and the comparison of the performance between pyrophotometer and infrared thermometer is made.

分析了红外测温仪的测温原理和应用，比较了光学高温计和红外测温仪的性能。

Based on analysis and comparison of the principle, method and form of train mass calculation and the correlative" select-judge value" for raising speed train,a change of particular attention from train mass to train speed is recommended in this paper,and the second critical gradient between the recommendatory maximum speed method and the traditional calculative speed method is established to the "select-judge value".

本文在分析与比较提速列车质量计算的原则和方式方法以及相关的选择判别值的基础上，提出应从传统的侧重列车质量的方式转向侧重运行速度的方式，并最终确立第二临界坡度为推荐的最高速度法与传统的计算速度法的选择判别值。

In the chapter three, by using the comparison principle and frequency domain method of the discrete systems with time-delay, combining Rouche Theorem, sufficient criterions for the stabilization of the neutral type discrete control systems with multiple time-delay and the neutral type interval coefficient discrete control systems with multiple time-delay are obtained by choosing appropriate feedback controller.

在第三章，利用时滞离散系统的比较原理与时域法，结合复变函数理论中的路歇定理，通过选取适当的反馈控制律，得到了多组时滞中立型线性定常离散控制系统和多组时滞中立型区间系数线性定常离散控制系统的无条件镇定的充分性准则。

According to the comparison between the mold's experimental result and its calculation result, and through the conversion by the means of similarity principle, the quality index of every item related to the actual bridge is obtained.

通过模型做的16种荷载工况下的试验结果表明，支座反力与相应的外荷载是平衡的，不同级别荷载的实测应力线形良好，说明模型和测点的质量是好的，测试数据是可靠的。

Using the comparison principle, it is proved that the proposed method is of superlinear convergence, The proposed algorithm takes the advantages of both the classical Newton method and the back/forward sweep method.

但是，前推回推法必须对节点和支路按一定的规则进行分层和编号，亦即是在具体的计算前，必须对配电网络进行拓扑分析，这对于大规模配电网和工程实际应用来说是一件比较麻烦的事情。

The design of image fountain signal, imaging technique and data processing are three key technologies to carry out CCD torsional oscillation measurement method. By analyzing the design principle, the paper devised an image source signal alternated with black and white strip and it has a good effect. Meanwhile, the system demand of imaging link was analyzed, such as light source, lens and camera etc. In addition, the principles of both the correlation algorithm and generalized correlation time delay estimation based on adaptive technology were studied, and a comparison between them was made as well.

本文中分析了图像源信号的设计原则，并设计了一种黑白相间的倾斜条纹图案作为图像源信号，获得了良好的测量效果；分析了测量系统对光源、镜头、相机等成像环节的要求；研究了相关算法和基于自适应技术的广义相关时延估计法两种数据处理算法的原理，并对两种方法的性能进行了比较。

By using comparison principle, the sufficient conditions of this model with global attractivity of infection-free periodic solution and system permanence were obtained.

研究一类具有阶段结构和脉冲免疫的SIR模型，利用比较原理得到此模型无病周期解全局吸引和系统持久的充分条件，并利用数值模拟验证结论。

Chapter one is on the rationality and necessity of the transition from reflectional method to axiological method to literary theory. The relationship between reflection and value constructs the philosophical basis of the humanities and natural sciences. Nature of literary activities is found by comparison of four aspects: condition, principle, method and process.

先剖析价值论与反映论的关系，指出它们分别构成了人文社会科学和自然科学的哲学基础，通过对二者的前提条件、遵循原则、掌握方法和发展过程的差异的比较，指出人文社会科学与自然科学的哲学基础殊异，而价值论的思考较为贴近文学活动的本质。

By establishing a new comparison principle,and using method of L-quasi-upper and lower solutions and mixed monotone iterative technique,the results of existence and uniqueness of solutions to Cauchy problem s of first order nonlinear integrodifferential equations in Banach spaces are obtained.

通过建立一个新的比较原理，利用L-拟上下解方法和混合单调迭代法，研究了Banach空间中一阶非线性积分微分方程初值问题解的存在唯一性，并给出了近似解的迭代序列和误差估计式。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。