防尘供水管网,dust prevention water supply network
1)dust prevention water supply network防尘供水管网
1.Application of improved genetic algorithms in minedust prevention water supply network optimization;遗传算法在井下防尘供水管网优化中的应用
英文短句/例句
1.Reliability of water supply network for mine dust-proofing based on GO methodologyGO法分析矿井防尘供水管网的可靠性
2.Optimal Design of Mine Water Supply Network for Dust-proofing Based on Improved Genetic Algorithm基于改进遗传算法的矿井防尘供水管网优化
3.Analysis and Prevention of Water Supply Network Accidents in Cold Wave寒潮期间供水管网事故分析和防治建议
4.The Cause and the Measures of the Prevention and Cure Regarding the Secondary Pollution of Water Quality in Municipal Water Supply Piping System;城市供水管网系统水质二次污染的原因及防治对策
5.Water supply is adequate, special network will supply water to the new area.供水能力充足，专设管网向新区供水。
6.Discussion about the Applicability of Pump in Network Pressure-superposed Water Supply System管网叠压供水系统中水泵适用性分析
7.Urban Water Supply Pipe network of Computer Incidents Squib Valve Clearance城市供水管网爆管事故的计算机关阀
8.Water Supply Networks Operating Condition Rechecking Based on Urban Water Supply SCADA System;基于城市供水SCADA系统的供水管网工况复核
9.Cost reducing of water production and marketing in water supply distribution system based DMA and PMA供水管网分区计量在降低供水产销差中的应用
10.Reforming water supply system based on the water supply equipment of network superposition(no vacuum)利用管网叠压(无负压)供水设备改造供水系统
11.positive pressured, powered dust respirator气体供应式滤尘呼吸防护器
12.Knowledge in waterproof， dust proof and sealing.具有防水、防尘和密封方面的知识。
13.Analysing the Cause of Abnormal Damage of Sha-Huo Water Supply Pipeline沙—火供水管线异常管损原因的分析及防治
14.Pump Failure Waterhammer in Heating Networks and By-Pass Pipe Choosen Principle Analysis;供热管网停泵水锤及水泵旁通管选择分析
15.Research on the Methods of Hydraulic Calculation and Water Quality Analyses of Urban Water Supply Network;对城市供水管网水力水质分析方法的研究
16.Calibration and Monitoring for Water Distribution Quality Modeling供水管网水质模型校正及水质监控研究
17.Analysis of Pipe Exploding and Breaking and Research on Measures of Reducing Leakage in the Water Supply Networks of Tianjin City;天津市供水管网爆管折管分析及降漏对策研究
18.Implementation on Coordinate Positioning of Establishment Point of Water Supply Pipe Net in Wuchang武昌供水管网设施点坐标定位的实现
相关短句/例句
Water supply network for dust-proofing防尘管网
3)hazard resistant water supply pipe network防灾供水管网
4)water distribution network供水管网
1.Optimizing water quality monitoring stations inwater distribution network in presence of partial coverage;部分覆盖下供水管网水质监测点优化选址方法
2.Application of GIS in the information system of urbanwater distribution network;GIS在城市供水管网信息系统中的应用
3.Problem analysis and control measures of colored water inwater distribution network;供水管网“有色水”问题的分析与控制措施
5)water supply network供水管网
1.Optimized design and calculation ofwater supply network of Nanchong City;城市供水管网优化设计计算
2.Development and application of decision-making support system forwater supply network in Xi an;西安市供水管网管理决策支持系统开发与应用
3.Development and maintenance of GIS inwater supply network;供水管网GIS的开发与维护
6)water distribution system供水管网
1.Optimal locations of water quality monitoring stations inwater distribution systems;供水管网水质监测点优化选址研究
2.Analysis on Pipe Break in Water Distribution System and its Countermeasures;供水管网爆管事故分析与对策探讨
3.The Design and Analysis of SCADA Systems Used in Water Distribution System;企业供水管网SCADA系统的设计分析
延伸阅读
防尘口罩防尘口罩dust mask而撞击、附着并沉积于纤维中，有些滤料的静电吸附性能也起着重要的捕集粉尘作用，从而防止粉尘进人呼吸器官。滤料可分为植物纤维、动物纤维、矿物纤维和合成纤维制品以及泡沫塑料等。20世纪60年代以来，广泛采用合成纤维滤料。其中，超细纤维滤料通气阻力低，阻尘率达”%以上;其次是脑纶、抓纶、锦纶等针刺绒布，阻尘率达90%左右，而且强度较大。技术指标防尘口罩的技术指标有阻尘率、呼吸阻力、死腔、视野、严密性和重t等。阻尘率评价口罩阻尘效果的指标，用百分率表示。口罩的阻尘率高，则防尘效果好。呼吸阻力包括呼气阻力和吸气阻力，表示口罩影响人的呼气、吸气的程度，用帕斯卡(Pa)表示。口罩的阻力大，导致佩戴者呼吸困难，因此，阻力越小越好。死腔指口罩与颜面之间的空隙，用立方厘米或毫升(c m3或mL)表示。口罩的死腔大，则滞留的废气多，影响吸气质量，因而又称之为有害空间。死腔不应大于zs0Cm，。视野双眼直视前方所看到的空间范围，用度表示。戴口罩后，下方视野缩小，要求不小于60度。严密性指口罩周边与颜面接触的吻合程度和呼气阀、过滤盒与面罩连接处的密合程度。口翠的严密性好，则尘粒漏人率低。重t指防尘口罩主体、过滤材料和配件的总质t。质t太大对头部运动有妨碍，对颈部肌肉造成紧张引起疲劳.有些国家对防尘口罩标准有明确规定。中国要求复式防尘口翠不大于1509，简易防尘口罩不大于709。分类按照结构，防尘口罩可分为简易防尘口罩和复式防尘口罩两种。简易防尘口翠结构简单，吸气和呼气均直接通过滤料。它又分为滤料直接成型式、支架式和夹具式三种。(1)滤料直接成型式防尘口罩:利用过滤材料的可塑性，直接造型成为半面罩，并在鼻部加铝条，使之与脸部密合。这种口罩结构简单，使用方便。(2)支架式防尘口罩:用塑料等做成支架，其上套以滤料(图l)，滤料可拆下洗涤、晾干。这种口罩的滤料经反复洗涤后，纤维受到磨损、变形，引起过滤效率降低。(3)夹具式防尘口罩:由两层塑料支架夹住滤料，周边衬以泡沫塑料密封垫，其滤料可更换。简易防尘口罩具有简单、轻便、影响视野小，美观等优点。但它无呼吸阀，呼出的水气易润湿滤料，使粉县2图1简易防尘口革l一浦料.2一系带，3一口早内边.4一支架尘粘附聚积，形成粉尘过滤层，增加呼吸阻力，因此不宜在具有高粉尘浓度的场所长时间使用，只适用于粉尘浓度小，分散度低、毒性小、工人劳动强度不大的工作场所。
