查询词典 filters

This paper introduces and investigates the filter theory of pseudo NM algebra. The notions of filters, generated filters, normal filters and prime filters etc. are defined. Their basic properties are investigated, with the structures of generated filters obtained. We show that prime filters and irreducible filters are equivalent, and that maximum filters must be prime filters. The prime filter theorem of pseudo NM algebra and its some corollaries are established.

引入了伪NM代数的滤子理论，定义了滤子、生成滤子、正规滤子和素滤子等概念，研究了它们的特征性质，给出了生成滤子的结构，证明了在伪NM代数中素滤子与不可约滤子等价以及极大滤子必是素滤子，建立了伪NM代数的素滤子定理及其推论。

along with the development of digital technology,digital filters are widely used in many fields,this paper introduces how to design a iir digital notch filters in matlab environment.the design of digital notch filters can be achieved through three steps:firstly,the design of analog lowpass filter; secondly,it is analog lowpass to analog band stop filter conversion;at last,using the bilinear transformation make the analog notch filters change into digital notch filters.the paper also introduces how to design the transfer function of the digital notch filters using all the zeros and farthest points at the same time,it also introduces the program of the digital notch filters under butterworth analog lowpass prototype.

摘 要：随着数字技术的发展，数字滤波器在许多领域得到广泛的应用。研究一种在matlab语言环境下设计iir数字陷波滤波器的方法，在数字陷波滤波器设计过程中，先进行模拟低通滤波器的设计，然后进行模拟低通/模拟带阻滤波器转换，最后采用双线性变化法将模拟陷波滤波器转化成数字陷波滤波器。提出一种用所有零点和极点来表达数字陷波器传递函数的方法，同时给出以巴特沃斯模拟低通为原型设计数字陷波滤波器的程序。关键词：无限冲激响应；巴特沃斯滤波器；数字陷波滤波器；matlab；双线性变换

Our factory was built in 2002, covers an area of more than 3000 square meters, the production of ventilation, filtration, separation, purification products, mainly include: air filters, smoke filters, air-conditioning filters, water filters, oil and gas separator, screen demister, wire mesh packing, stainless steel filters, liquid filters, aluminum filters platinum, punching board network, stretching board network, the product is widely used in electronics, telecommunications, finance, biotechnology, medical, pharmaceutical , food, chemical industry, machinery manufacturing and other industries.

我厂建于2002年，占地3000多平方米，生产通风、过滤、分离、净化系列产品，主要有：风口过滤器、油烟过滤器、空调过滤器、水过滤器、油气分离器、丝网除沫器、金属丝网填料、不锈钢过滤网、气液过滤网、铝铂过滤网、冲孔板网、拉伸板网等，产品广泛应用于电子、电信、金融、生物、医疗、制药、食品、化工、机械制造等行业。

Items such as arterial filters, anesthesia filters, blood filters, IV catheters, dialysis tubes, pipettes, cardiometry reservoirs, blood/gas filters, face masks and IV spike/filters can all be made using ultrasonic welding.

项目例如动脉过滤器、麻醉过滤器、血液过滤器、IV导尿管、透析管、吸移管、人造心脏、血液或气体过滤器、面罩和IV钉或者过滤器可能所有使用超音波熔接被使用。

The concepts of MP-filters and Boolean MP-filters in NML algebras are introduced in this paper, and by using MP-filters, the structure of NML algebras are established: If F is the Boolean filters, then M/~ is the Boolean algebras, i. e. the quotient algebra of NML algebras is obtained.

讨论了NML代数的性质，并且在NML代数上引入MP-滤子与MP-理想以及布尔MP-滤子的概念，并利用布尔MP-滤子建立了NML代数的结构：若F是布尔滤子，则M/~是布尔代数，即NML代数的商代数是布尔代数。

This utility model disclosed a dust removal equipment, environmental protection, their characteristics is that, including filters, dust collection equipment and negative pressure ventilation machines, referred to the vertical filter settings are arranged in descending sequence multi-aperture filter, its Set large aperture filters connected at one end of inlet pipe, set a small aperture at one end of filters connected through the vacuum exhaust fan out of the wind pipe, dust collection equipment installed in the bottom of each layer filters.

本实用新型公开了一种环保除尘设备，其特征在于，包括过滤器、集尘装置和负压抽风机，所述过滤器内垂直设置有多层孔径依次从大到小排列的过滤网，其设置有大孔径过滤网的一端连接进风管，设置有小孔径过滤网的一端通过负压抽风机连接出风管，集尘装置设置在每层过滤网的下端。

Suction filters, side wall suction filters, high pressure filters, in line pressure filters, accumulator, level switch, level gauge, air breather, pre...

桶内吸油网、桶外吸油网、高压滤网、管路滤网、回油滤网、蓄压器、液位开关、液面计、空气滤清器、压力表、。。。

Is a professional in the health-level non-pressure vessel, chemical pressure tank, reactor, agitator tank, hydraulic lifting platform, heat exchanger, evaporator ,Carbon quartz sand filters, bag filters, cartridge filters, nanofiltration filters and the non-standard equipment design and development, manufacturing and service businesses.

广东省江门市江海区英杰特机械设备有限公司是广州英纳集团成员企业，是一家专业从事卫生级常压容器、化工常压容器、反应罐、反应釜、液压升降平台、换热器、蒸发器、活性炭石英砂过滤器、袋式过滤器、滤芯过滤器、纳滤膜过滤器及非标机器的设计与开发、生产及服务的企业。

The filtration performance of jy discal filters and arkal discal filters are compared.based on different filtering accuracy,micron rating(20,55,100,200 μm),and different dosages of chemicals added to the influent,the parameter differences such as turbidity,suspended solids content,fpi value,head loss,filtration cycle,flux,backwash,etc.are compared and studied.the results show that these two kinds of filters have similar performance.

采用并联式的过滤系统，对国产的亚高牌叠片式过滤器与以色列arkal公司的叠片式过滤器进行了工艺性能比较试验。针对不同过滤精度(20、55、100、200μm)的叠片，在不同的加药量下，比较研究了两种过滤器进出水的浊度和悬浮固体含量、周期产水量、fpi值、水头损失、流量、反洗等工艺性能参数差异，试验结果表明，两种过滤器的性能大体相近。

The study of lattice implication algebras On the basis of previous results of lattice implication algebras, we firstly studied some properties of implication filters, prime implication filters, maximal implication filters and ultrafilters. Then we laid stress on the study of two kinds of relatively general lattice implication algebras, i. e. complete and atomic lattice implication algebra and injective lattice implication algebra.

关于格蕴涵代数的研究本文在已有的格蕴涵代数研究结果基础上，首先研究了格蕴涵代数中蕴涵滤子、素蕴涵滤子、极大蕴涵滤子和超滤等的性质和相互的关系，然后重点较系统地研究了两类覆盖面较广的格蕴涵代数：完备的且原子的格蕴涵代数和内射的格蕴涵代数。

If this is not specified, then it is defaulted to 25

如果这是没有指定，则默认为25

Cott invited his mother over for dinner.

COTT邀请母亲来他的房子晚餐。