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filter     
相关语句
  过滤
    CHARACTERISTICS OF PP-K_2 TYPE POLYPROPYLENE FILTER MATERIAL
    PP-K_2型丙纶过滤材料性能的研究
短句来源
    Studies on Filter Coefficient of Graded Sand Filter Bed
    级配砂滤层过滤系数的研究
短句来源
    CHARACTERISTIC STUDY OF DOMESTIC FILTER MEDIA USED FOR AEROSOL SAMPLING
    国产滤材在气溶胶取样中的过滤特性研究
短句来源
    Research on Wet-Type Dust Filter With Charged Water Spray
    荷电水雾湿式过滤除尘的研究
短句来源
    Application of Filter Technology With Multi-Layer Filter Material on Oilfield Sewage Treatment
    多层滤料过滤技术在油田污水处理中的应用
短句来源
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  过滤器
    Research on Ceramic Filter in Advanced Coal-Fired Power Cycle
    先进燃煤联合循环高温陶瓷过滤器研究
短句来源
    INVESTIGATION ON THE FILTER EFFLUENT CONCENTRATIONS AT THE BAD RAPPENAU CARIX PLANT
    联邦德国Bad Rappenau市的CARIX水厂过滤器流出物浓度的研究
短句来源
    Application of Gore Film Filter in Wastewater Treatment from Phosphate Fertilizer Production
    戈尔膜过滤器在磷肥废水处理中的应用
短句来源
    PRODUCTIVE TESTING OF TREATMENT OF POLYESTER WASTEWATER BY ANAEROBIC SLUDGE BED FILTER
    厌氧污泥床过滤器处理涤纶废水的生产性试验
短句来源
    Study on design parameter of walnut shell filter.
    核桃壳过滤器设计参数试验研究
短句来源
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  过滤机
    Theory and Practice of Belt Press Filter
    带式压榨过滤机的理论与实践
短句来源
    Research on the Filtration Mechanism of Rigid Ceramic Filter Element
    刚性陶瓷过滤元件的过滤机理研究
短句来源
    Application of PBF Belt Vacuum Filter in TA Residue Dewatering
    PBF型带式真空过滤机在TA残渣脱水中的应用
短句来源
    Application of porcelain filter in dewatering of mud from sulphurization system
    陶瓷过滤机在硫化污泥脱水中的应用
短句来源
    Optimization of White Water Treatment Ability of Disc Filter of the High Speed Paper Machine
    高速纸机多盘过滤机白水处理能力的优化
短句来源
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  滤池
    Problems Deserving of Attention in Designing Siphon Filter Air Water Washing Process
    设计虹吸滤池气水冲洗工艺应注意的几个问题
短句来源
    Mathematical Model and Design Parameters of Up-Flow Expansion Filter
    升流式膨胀滤池的数学模型及设计参数
短句来源
    Isolation and Activity of Bacteria Catalyzing Mn~(2+)-Oxidization from Mn-removing Filter in a Water Plant
    自来水厂除锰滤池Mn~(2+)氧化细菌的分离及其活性的研究
短句来源
    The result of removal of CODCr and NH3-N from urban sewage was experimentally investigated by using biological aerated filter bed with double filter material of slag and zeolite.
    研究炉渣-沸石双层滤料曝气生物滤池处理城市污水中CODCr和NH3-N的去除效果,试验结果表明:滤池中两种滤料显示出良好的互补性,滤池对CODCr和NH3-N的去除率稳定;
短句来源
    Experimental Study on Recycling of Filter's Backwashing Water
    滤池反冲洗水回用的小试研究
短句来源
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  filter
We characterize the wavelet multipliers, as well as the scaling function multipliers and low pass filter multipliers.
      
For compactly supported gm, n (FIR filter banks) we prove an exponential rate of convergence and derive explicit expressions for the involved constants.
      
This, in turn, is used for designing local orthogonal bases obtained by unitary transformations of a single prototype filter.
      
This in turn, is used for designing local orthogonal bases obtained by unitary transformations of a single prototype filter.
      
The measure for uncertainty is a product of two factors evaluating the frequency selectivity in comparison with the ideal filter and the effective length of the filter in the digital domain, respectively.
      
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Currently, there are two types of equation for water and wastewater filter bed backwashing: the velocity ratio equation and the drag coefficient equation. Their development, status quo and some drawbacks are discussed here.

目前,用水和废水处理中滤池反冲洗计算公式,通用的主要有两种类型,即:速比系数式和阻力系数式,本文评述了它们的发展、现状和存在向题。 根据理论推导和实验研究,本文提出改进的石英砂和无烟煤滤层反冲洗计算公式。石英砂滤层的速比系数式为:无烟煤滤层的速比系数式为两种滤层的阻力系数式则统一为:这些改进式能够良好地符合不同来源的实验资料,用于计算可以得到比现在公式更加精确的结果。 实验是以我国常用滤料进行的,所得计算公式可以推荐取代借用的国外公式。

The analysis of Pu in air is described.A superfinefiber cl-oth is used for filtering air about 5×10~3 to 10~4 m~3.The filter cloth beari-ng dust is ashed using a mixture of H_2SO_4-HClO_4,then dissolved withHNO_3-HClO_4-HF solution and evaporated to dry.Using 3.5 N HNO_3 todissolve the residue,Pu is converted to tetravalent state and extracted with10% Trioctylamine-Xylene and 10% Tridodecylamine-Xylene respectively.Finally Pu is electrodeposited on a stainless steel plate and measured by alow-background...

The analysis of Pu in air is described.A superfinefiber cl-oth is used for filtering air about 5×10~3 to 10~4 m~3.The filter cloth beari-ng dust is ashed using a mixture of H_2SO_4-HClO_4,then dissolved withHNO_3-HClO_4-HF solution and evaporated to dry.Using 3.5 N HNO_3 todissolve the residue,Pu is converted to tetravalent state and extracted with10% Trioctylamine-Xylene and 10% Tridodecylamine-Xylene respectively.Finally Pu is electrodeposited on a stainless steel plate and measured by alow-background alpha counter or a spectrometer.The electrodeposited sourceis firm and without self absorption.It is suitable for analysis of energyspectrum by a set of alpha spectrometer.When ~(238)Pu is used as a tracer,its recovery is 77±10%,with activity being 0.29 dpm.If the amount ofair sample processed is 5000 m~3,the sensitivity of the method is 2×10~(-21)Ci/1(3σ of the background).The decontamination coefficients for U,Th and ~(210)Po are 7×10~4,5×10~4and 2×10~5 respectively.The duration of chemical process for four parallelsamples is 2.5 days.This method may serve for routine monitoring Pu inair.The Pu content in air around our institute was determined to be 2.9×10~(-20)Ci/1.

本文叙述了环境空气中钚的分析方法。用超细纤维空气滤布采集空气5千至1万立方米。空气滤布和灰尘用 H_2SO_4-HClO_4混合液灰化。然后用 HNO_3-HClO_4-HF 混合液溶解,蒸发至干。用3.5N HNO_3溶液溶解残渣。将钚转化到四价态,用10%的三脂肪胺-二甲苯和10%的三月桂胺-二甲苯萃取。最后将钚电沉积在不锈钢盘上。用低本底α计数器或低本底α谱仪测量。电沉积源牢固而无自吸收,适合于α谱仪能谱分析。当使用~(238)Pu 作示踪剂,强度在0.29dpm 时,回收率为77±10%。在处理5千立方米空气样品时,方法的灵敏度为2×10~(-21)居里/升。本方法对铀、钍、钋的去污系数分别是7×10~4、5×10~4和2×10~5。完成四个平行样品的化学操作需要2.5天。可以满足环境空气中钚的常规监测需要。用本方法测定了我所环境空气中钚的含量为2.9×10~(-20)居里/升。

The Content of ~(210)Po in six varieties of china-made cigarettewas repored in this paper.The average ~(210)Po content per cigarette was det-ermined to be 0.85 pci (31.4Bq).In process of The“standard smoking”about 12% of ~(210)Po contained in a cigarette was transferredsinto the inha-led portion of smoke and 18% into its uninhaled Portion,35% of the ~(210)Pocontent remained in the cigarette ash and the same percentage in the cigare- tte stump.The fibre filter tip ean reduce the ~(210)po content in smoke...

The Content of ~(210)Po in six varieties of china-made cigarettewas repored in this paper.The average ~(210)Po content per cigarette was det-ermined to be 0.85 pci (31.4Bq).In process of The“standard smoking”about 12% of ~(210)Po contained in a cigarette was transferredsinto the inha-led portion of smoke and 18% into its uninhaled Portion,35% of the ~(210)Pocontent remained in the cigarette ash and the same percentage in the cigare- tte stump.The fibre filter tip ean reduce the ~(210)po content in smoke byhalf and water used as an absorbent in the gas scrubber can remove 58—63%of ~(210)po in smoke.Dose eeuivalent recieved for 25 years by smoker who smokes ohe packetof cigarette daily was estimated to be about to 1 rem(1×10~(-2) Sv).

本文报道了6种国产香烟中~(210)Po 的含量,平均每支香烟含有0.85微微居里(31.4贝可)。在标准吸烟过程中,一支香烟所含有的~(210)Po,约12%转移到吸入烟雾中,18%转移到逸出烟雾中,35%在烟灰中,35%在烟蒂中。纤维过滤咀可吸收50%的~(210)Po,水可吸收58—60%。估算了每日吸一盒烟的人25年所受的剂量约为1雷姆(1×10~(-2)西弗)。

 
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