查询词典 below zero

The average zero-crossing frequency of zero crossing detector is divided, the former generation is evaluated, the characteristic of Dopper frequency tracking loop in SPA-Ⅱ system is summarized by comparison between the two systems.

本文还对过零截点器的平均过零频率进行了推导，由此对处理机-Ⅱ型的前一代系统作了估价，在此基础上，通过比较，总结了处理机-Ⅱ型系统多卜勒频率跟踪环的特点。

This paper introduced an eigen-mode decomposing method to decouple zero sequence parameter in double circuit. The decomposing matrix of eigen-mode component is given. The zero sequence component relationship between voltages or currents at two terminals of double circuit was achieved by composing eigen-mode components.

提出一种采用特征模量分解方法对同杆多回线间的零序参数解耦，并给出了同杆双回线零序参数特征模量分解矩阵，通过特征模量分解得到同杆双回线路两端之间的零序电量关系。

The results obtained here are of general significance.They are used to analyze the performance characteristics of the Brownian motors operating in the three interesting cases with the zero heat leak,zero average drift velocity or linear response relation.

得到的计算结果更具有普遍意义，它们可以用来分析布朗马达在三个有趣条件下的性能特性：没有热漏情况，平均速度等于零的情况和线性响应区附近的情况。

This paper provides the analytic method to calculate the value of Green"s functions in space domain at the zero distance by the discrete complex image theory,that is ,to express the finite progressional sum of Green"s functions detained with DCIT into Taylor expansion and deduce the analytic expression of the singularities at the zero distance with the help of the specific subdomain base functions.

对此，本文在讨论采用离散复镜象理论计算空间域Green函数时，提出了采用该镜象理论计算空间域Green函数零距离处奇异值的解析方法，即，采用Taylor公式展开镜象理论得到的空间域Green函数的有限级数和形式，并结合特定的分域基函数来得到零距离处Green函数奇异值的解析计算式进行计算。

Research results: Kolmogorov entropy is more than zero, lyapunov exponents tend to zero, correlation dimension is real number of more than 3, negative power appears partially in power spectrum in lower frequency and the FCA diagram as certain inclination.

研究结果：kolmogorov熵大于0，Lyapunov指数趋于0，关联维为大于3的实数，功率谱图中在低谱部分出现负幂，PCA图具有一定的斜率。

Nanoscale zero valent iron particles were synthesized by reductive method in aqueous phase. The crystal structure, morphology and size of the particles were characterized using X-ray diffraction and transmission electron microscopy. The influence of temperature, initial acid fuchsine concentration, nanoscale zero valent iron dosage and pH on the removal of acid fuchsine by the particles was studied, and the removal mechanism of acid fuchsine was discussed.

摘 要：采用液相还原法制备零价纳米铁粒子；用X射线衍射和透射电镜表征该样品的晶体结构、颗粒形貌与尺寸；研究温度、酸性品红初始浓度、纳米零价铁加入量及溶液pH值对零价纳米铁粒子脱除酸性品红的影响，并对酸性品红的脱除机理进行讨论。

Protection schemes based on the zero sequence fundamental voltage and the third harmonic voltage and the injection voltage are presented in this paper, and based on which, the factors which affects the protection schemes based on the zero sequence fundamental voltage and the relevant measures is presented.

本文在对基波零序电压型定子接地保护、三次谐波电压型定子接地保护和外加电源式定子接地保护各种方案的构成原理及其优缺点进行分析的基础上，详细分析了影响基波零序电压型定子接地保护的各种因素，并提出了相应措施。

Deduced by the ip iq detection method,it directly applied to asymmetric three phase four wire system,no need to remove zero sequence component,it is correctly detects the fundamental zero-sequence,negative sequence and harmonic component,the simulation results show that its conclusions are correct.

经推导，ip iq 检测法可直接应用于不对称三相四线制系统中，无需先剔除零序分量，同样能够正确检测出基波零序、负序及谐波分量，仿真结果证明其结论的正确性。

After descibing the concepts, definitionsand operation approaches of quantum group and SLq(2) Lie algebra, the physicalmeaning of quantum group particles is explained in the present thesis. The gaugeinvariance in SLq(2) gauge field and its thermodynamics model is considered basedon the idea of q-deformation. The zero energy gap equation and q-deformed energygap equation are derived under the assumption of q-quantization and semi-classical q-quantization, then the zero-temperature energy gap A(0,q) and crititical temperature〓 can be calculated from the q-energy gap equation.

在介绍了量子群和SLq(2)李代数的基本概念，定义和运算方法后，文中进一步阐述了量子群粒子的物理意义；在q变形思想基础上，本文研究了SLq(2)规范场及其热力学模型中的规范不变性质，并在q量子化和半经典q量子化的假设下导出了零能隙方程和q变形能隙方程；然后从q能隙方程计算了与零温度能隙△(0，q)和临界温度〓。

It is found that the later is better than the former greatly, due to the fact that accurate solution by gaussian elimination is zero error. But zero error is ideal situation and it is difficult to reach in practice. So all we can do is to search an optimal solution under many restriction conditions, and the optimal can represent the solution of the question better.

咎其原因，高斯消元法是求解问题的精确解，而在实际生产科研工作中，这种理想状况是很难达到的，因此，遗传算法在多个约束条件下寻找当前最优解作为问题的解，才具有实际意义。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。