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It proves the singular transport operator generates a strongly continuous C_0 semigroup V(t0)and the weak compactness properties of the second-order remained term of the Dyson-Phillips expansion for the C_0 semigroup V(t0)in L1 space,and to obtain the spectrum of the singular transport operator only consist of,at most,finitely many isolate eigenvalues which have a finite algebraic multiplicity in trip Γ.

证明了这类方程相应的奇异迁移算子产生C0半群和该半群的Dyson-Phillips展开式的二阶余项是弱紧的，从而得到了该迁移算子的谱在区域Γ中仅由至多有限个具有限代数重数的离散本征值组成等结果。上饶师院数学与计算机系江西上饶334001；南昌大学数学系江西南昌330047袁邓彬

Described the design of supercritical fluid extraction principles; combination of star anise essential oil of the nature of the proposed extraction conditions for extracting pressure 15MPa, extraction temperature 40 ℃, CO2 flow rate 830 ~ 850L / h, extraction time of 2h, the extraction conditions selected temperature swing separation, further development of the star anise crushed, CO2 super-critical phase transition, extraction, separation and packaging processes; in determining the production process on the basis of material balance, heat balance, extractor size calculation, piping calculation and packaging process is calculated; for the pollution occurred during the production, analysis of pollution sources, pollution control and waste treatment proposed measures; accounting of production costs and value.

本设计阐述了超临界流体萃取技术的原理；结合八角精油的性质，提出萃取条件为萃取压力15MPa，萃取温度40℃，CO2流量830～850L/h，萃取时间2h，根据萃取条件选用变温变压的分离方式，进一步制定了八角粉碎、CO2超临界相变、萃取、分离和包装等工序；在确定的生产工艺流程的基础上进行物料衡算、热量衡算、萃取釜尺寸计算、管路计算和包装工序计算；针对生产过程中出现的污染，分析污染的来源，提出控制污染和废料处理的措施；核算生产的成本和价值。

Secondly, using the relation between the weighted modified K-functional, the weighted modulus of smoothness ,the weighted main-part modulus of smoothness . we get the pointwise direct and inverse approximation theorem with Jacobi weight for Szdsz-Kantorovich operator. Thus some results on w = 0w(x denotes the weight function, Ditzian-Totik modulus and classic modulus are extend.

其次，引入一种改变的带权K-泛函，利用带权光滑模和带权主部光滑的关系及带权光滑模与改变带权K-泛函的等价性，关于Szász-Kantorovich算子，讨论了一阶矩不为零的算子的点态带Jacobi权逼近正定理及等价定理，推广了已有的权为零及Ditzian-Totik光滑模和古典光滑模的结果。

This dissertation first presents a simple introduction of some important basic problems ofoperator approximation theory,and history and research status of wavelet theory.

全文首先介绍了算子逼近理论的一些重要基本问题以及小波理论发展的历史和现状，指明了线性正多项式算子逼近收敛阶的受限性。

It points out that the implication operator I defined by strict t-norms is not continuous at (0,0) and discusses under what conditions a t-norm induced by an implication operator is Archimedean.

指出了由严格的仁范定义的蕴涵算子方（＄叨在叮0）处不连续；并给出了什么样的蕴涵算子定义的t－范是阿基米德的。

In this paper, some operators（Roberts, Sobel, Prewitt, Laplacian, Canny） which are frequently used are studied theoretically and arithmetically, and compared with the characteristic of these methods on image edge detection.

阐述了边缘检测在医学图像处理中的重要作用，分析了几种常用算子（Roberts，Sobel，Prewitt，Laplacian，Canny）基本原理及算法实现，并对比各算子的优缺点，并用VC＋＋。

In the method, the ordered weighted averaging operator for two-tuple linguistic information is described.

该方法首先描述了二元语义信息集结的有序加权平均算子，并提出了一种依赖型二元语义有序加权平均算子。

A fuzzy ordered weighted averaging operator is presented and then utilized to aggregate the information given in the form of triangular fuzzy number complementary judgement matrix.

给出了一种模糊有序加权平均算子，利用该算子对以三角模糊数互补判断矩阵形式给出的判断信息进行了集结，基于三角模糊数期望值求得三角模糊数互补判断矩阵的排序向量，进而对决策方案进行排序。

We utilize the intuitionistic fuzzy weighted arithmetric averaging operator to aggregate the intuitionistic fuzzy information corresponding to each alternative, and then rank the alternatives and select the most desirable one according to the score function and accuracy function.

然后对权重信息不完全的直觉模糊数的多属性决策方法进行了研究，基于正理想方案和算子，给出了一个具有最小偏差的目标规划模型，从而获得相应的属性权重，基于IFWAA算子对直觉模糊信息进行集结，进而根据得分函数和精确函数对方案进行排序。

The theory and algorithm of time synchronization about LEO are discussed with the key technique in many ways. On the basis of Bernese 5.0 GPS Software, onboard GPS receivers clock error about GRACE is processed, and the results-specific analysis is computed.

研究了利用星载GPS接收机进行低轨卫星与卫星时间同步，探讨了其中的关键技术，以Bernese 5.0软件为基础，对GRACE卫星的星载GPS接收机钟差进行了解算，具体分析了解算结果。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。