查询词典 stochastic filtering

In this paper we present an illegal data packet filtering method called DHCP snooping based on firewall and MAC address authentication technology, which guarantees network security by filtering untrusty data packets with establishing and maintaining a DHCP snooping binding table.

本文在现有的一些防火墙技术和MAC地址认证的基础上，提出一种新的过滤非法数据包的方法——DHCP窥探，是一种通过建立和维护DHCP窥探绑定表，过滤不可信任的DHCP报文，从而保证网络安全的技术。

In view of the characteristic micro-seismic signal, this article has designed the method of variable velocity FK filtering-the auto-adapted polarization filtering.

针对微地震信号的特点，研究了变速FK滤波-自适应极化滤波方法。

The phylogeny and applied prospect of MES are summarized in the paper. The principle of this system is analyzed from the point of view of acoustics. The surveying and filtering technology of auxiliary parameters, sounding data and the theory of image form, backscatter strength data processing, are researched deeply in the paper. The optimal model of velocity of sound is given. For sound ray tracing, some methods of correction of sound ray curve are developed. At the same time, an ideal model of sound ray tracing is proved and given. The GPS technology is applied for the determination of tide, attitude of vessel. Moreover, some methods are given. As an important topic, the systematic error is discussed in the paper. Some filtering methods are researched in this paper. Based on the current methods of image processing, the procedure and methods are tested and given that adapt to sonar image processing.

本文研究的工作是在总结多波束声纳测深系统的发展历史、应用前景的基础上，从声学角度分析了多波束系统的工作原理；对多波束辅助参数的测定和滤波方法、测深数据的滤波方法、多波束声纳图像的形成机理、图像处理以及最终应用等作了比较深入的研究；得出了适合于多波束精密深度计算的最优声速模型和声线改正模型；提出了 GPS 载波相位定位技术用于多波束辅助参数测量的思想、算法，改善了多波束系统的作业模式；系统地分析了深度数据的误差来源和类型，首次将系统误差作为影响测深精度的主要因素给以研究，并给出了削弱系统误差的方法，提高了深度数据的质量；对多波束声纳图像的形成、处理方法进行了细致的研究，给出了适合多波束图像处理的算法和流程，并从理论和实践上对声纳图像的应用进行了比较全面的研究。

The filtration process adopts more than two filters to make alternative filtration, and each filter is equipped with cylindrical filtering element made up by coiling metal gauze microporous material formed from 4-6 layers of multi-layer wire gauze including protecting layer, filtering layer and supporting layer.

本发明所述的硫磺制酸的液硫净化方法包括沉降和过滤。液硫过滤采用两个以上的过滤器进行交替过滤，过滤器中配置了多支上下通径的由金属丝网微孔材料卷制而成的圆筒式滤芯。

Cyclope Internet Filtering Proxy is an Internet Filtering Software designed to optimize Internet usage and bandwidth consumption, reduce web browsing for personal use during working hours, eliminate explicit content websites form being accessed, protect the network against online threats, and discourage the download of unlicensed software and other copyrighted materials.

cyclope互联网过滤代理是一项网际网路的过滤软件，设计优化，互联网的应用和带宽的消耗，减少浏览网页供个人使用的在工作时间内，消除了明确的内容网站被访问的形式，保护网络免受网上威胁，并阻止下载未经授权的软件和其他有版权的材料。

Deferrizers and demaganizers are series of products designed by our company for underground water with comparatively high iron and managanese content according to aerating oxidation priciple.in these prducts,packed natural manganese sand in filter is applied as filtering materials,and oxygen in air is applied as oxidants,to make ferrous iron in water oxidized into ferric iron, in a same time, oxidation reaction makes its produced its produced substances left in filtering materials for purposes of deferrization and deman-ganization.

除铁锰装置是我公司针对铁、锰较高的地下水，按曝气氧化法的原理而设计的系列产品，它是利用过滤器内装填城然锰砂为滤料，利用空气中的氧化剂，使水中的二价铁，同时发生氧化反应使其物进截留在滤料中，从而达到除，除锰的目的。

According to paper-plate's performance, the filter may achieve clear and germfree filtering and coordinate with use of the former filtering.

根据纸板的性能可实现清过滤和无菌过滤，与前道过滤配合使用。

The invention relates to a synthesis method of N-acetylaminoglucose, which comprises dissolving D-glucosamine hydrochlorate and alcohol at the mass ratio of 2-2.5:100, adjusting the pH value of the solution to 9-10, filtering, taking the filter liquor, mixing and adding acetic anhydride at the 50-60wt% amount of D-glucosamine hydrochlorate, mixing and reacting for 2h, using absolute ethyl alcohol to recrystallizing, filtering and recrystallizing via water, to obtain rod-shape food grade N-acetylaminoglucose.

本发明涉及一种N-乙酰氨基葡萄糖的合成方法。该方法的具体步骤为：将D-葡萄糖胺盐酸盐和乙醇按2～2.5∶100的质量比溶于水中，调节该溶液的pH值为9～10；过滤，取滤液，搅拌下加入乙酸酐，其加入量为原料D-葡萄糖胺盐酸盐量的50～60wt％；搅拌反应2小时后，用无水乙醇进行重结晶；过滤，晶体再用水重结晶，得棒状食品级N-乙酰氨基葡萄糖。

The filter core (2) can be swelled up to largen the interval between the drapes of the filtering paper canister (8) when the filter core is washed, thereby it is convenient to clean the filtering paper canister.

滤芯(2)在清洗时可以撑开，使滤纸筒(8)褶皱间的间隔变大，方便了对滤纸筒的清洗。

The extended Kalman filtering method adopts the method to linearize the non-linear system approximately, and the problem of non-linear system filtering is solved.

扩展卡尔曼滤波采取对非线性系统近似线性化的处理方法，解决了非线性系统滤波问题。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。