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In this paper,we discuss the extension of the Dω-order and D*ω-order in partiany or-dered group,obtain the necessary and sufficient condition for an extension of the partial-or-der in partially ordered group to Dω-order and D*ω-order, and the condition for the exten-sion of every partial order in a group to Dω-order.

讨论了偏序群的Dω－序扩展，得到了偏序群的偏序可扩展成为Dω－序的充要条件，以及每一偏序均可扩展成为Dω－序的条件，同时刻划了Dω－序群。

The course content includes ordinary differential equation, linear algebra, vector calculus, Fourier analysis and partial differencial equation partial differential equation, with the aim to train students in establishing an exact perception to the meaning of theory, calculation and experimentation.

课程内容有常微分方程，线性代数，向量微积分，Fourier 分析及偏微分方程式等章节，训练同学在理论，计算及实验间建立正确的认知及意义。

The results show that the perfect strength can be obtained under oxygen partial pressure about 20% O2, overhigh or low oxygen partial pressure is unfavorable for recrystallization of Fe2O3, which causes a decrease of pellet strength. The original hematite will be transformed into magnetite on reduction firstly when carbon-burdened hematite pellet is roasted in oxidizing atmosphere, and then the magnetite will be oxidized to secondary hematite, which is more active than original hematite, therefore, the induration strength of pellet is able to be enhanced.

研究结果表明：内配碳赤铁矿氧化球团在接近空气配比(氧含量约20%，体积分数)的氧化性气氛中焙烧强度最大，氧含量过高或过低都会影响Fe2O3的再结晶，使球团强度降低；在氧化性气氛中焙烧含碳赤铁矿球团时，原生赤铁矿先还原为磁铁矿，磁铁矿再氧化成活性较高的次生赤铁矿，提高了赤铁矿焙烧固结性能和球团强度。

A kind of delay parabolic partial differential equation is studied. A numerical method is proposed by discrete skill. The numerical stability for this kind of delay parabolic partial differential is analyzed by interpolation method.

研究了一类时滞的抛物型偏微分方程初边值问题，利用离散技巧，提出了一种数值方法，然后在一定插值技术下分析了算法的稳定性。

Based on a general parametric eigenstructure assignment result proposed for descriptor linear systems via proportional plus partial derivative state feedback and a result for generalized eigenvalue sensitivity problem of matrix pairs, parametric representation of the closed-loop eigenvalue sensitivities to the perturbed elements in the open-loop system matrices is obtained. An effective algorithm for eigenvalue assignment with minimum sensitivity in descriptor linear systems via proportional plus partial derivative state feedback is then proposed.

摘要基于广义线性系统比例与部分状态导数反馈参数化特征结构配置结果和矩阵对广义特征值灵敏度结果，得到了关于开环系统矩阵中摄动元素的闭环特征值灵敏度的参数表达式，并在此基础上提出了广义线性系统比例与部分状态导数反馈最小灵敏度特征值配置的有效算法。

Surgeries were performed in 8 patients, including sleeve tracheal resection in 2 patients, partial tracheal wall resection in 3 patients, total laryngeetomy and partial excision of the trachea with thyroid lobectomy in 1 patient, and endoscopic YAG laser surgery in 1 parle,at.

行手术治疗者8例，其中行气管袖状切除者2例，部分气管壁切除者3例，全喉、部分气管及甲状腺腺叶切除者1例，内窥镜下YAG激光切除者1例，气管开窗肿瘤剔除术1例。

First,the BP neural network to carry on the partial diagnosis to the fault information is used,then the fusion using the D-S evidence theory to the partial diagnosis result is carried on,and the final fault result is obtained.The introduction of D-S evidence theory increases the diagnosis result reliability and the accuracy,enhances the diagnosis algorithm compatibility.

首先用BP神经网络对故障信息进行局部诊断，然后利用D-S证据理论对局部诊断结果进行融合，进行全局诊断，得到最终的故障结果。D-S证据理论的引入，增大了诊断结果的可靠性和准确性，提高了诊断算法的适应性。

Take the 8K mirror kneading board, the electricity galvanized sheet as a ledger wall, after carrying on the etching treatment, carries on the intensive processing again to the object surface, may carry on the partial sand blasting, the wiredrawing, the gold inlay, the partial titanium gold and so on various types complex craft processing, realizes the design light and shade interaction, the color gorgeous effect.

以8K镜面板，电镀板为底板，进行蚀刻处理后，对物体表面再进行深加工，可进行局部的喷砂，拉丝，嵌金，局部钛金等各式复杂工艺处理，实现图案明暗相间，色彩绚丽的效果。

A concept of partial derivative called pseudo-partial-derivative is used to dynamically linearize a nonlinear system, and an aggregation method is applied to deal with the future predictive PPD.

基于pseudo-partial-derivative的概念动态线性化非线性系统，利用集结方法处理未来预测时刻的PPD，实现了非线性系统的自适应预测函数控制。

In this paper, the author is concerned with the problems that are to be solved in the field of Partial Difference Equations such as the following: the existence of oscillatory solutions of some partial difference equation, the asymptotic behavior of positive solutions of the same equation.

本文旨在研究当前偏差分方程领域中尚待解决的有关振动解的存在性及正解的渐近存在性等问题。

The two-acre Dunbar Community Garden in Little Rock has served as a model for several years.

几年来，坐落于小石城，占地两英亩的邓巴社区菜园树立了一个标杆。

Jerry points to the jacket hanging in the bathroom. It's ruined, and unwearable What?

杰瑞指着洗手间里挂着的夹克，毁了，不能穿了）什么？