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采用采用PP管及配件：根据给水设计图配置好管及配件：根据给水设计图配置好PP管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物Specialized English for Water and Wastewater Engineering给排水专业英语给排水专业英语 主讲教师：李康主讲教师：李康Specialized English for Water 1采用采用PP管及配件：根据给水设计图配置好管及配件：根据给水设计图配置好PP管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物Lesson 4 Stormwater Collection and Sewer Design雨水收集和管道设计Lesson 4 Stormwater Col2采用采用PP管及配件：根据给水设计图配置好管及配件：根据给水设计图配置好PP管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物4.1WordsandexpressionsReviewDomesticwastewater生活污水Drainagesystem排水系统Combinedsewers合流制Separatesewers分流制Untreatedwater未处理水Finishedwater出水Organicpollutant有机污染物Biochemicaloxygendemand(BOD)生化需氧量4.1 Words and expressions Revi3采用采用PP管及配件：根据给水设计图配置好管及配件：根据给水设计图配置好PP管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物4.2NewwordsandexpressionsHydraulicload水力负荷Organicload有机负荷 headloss水头损失 microorganisms 微生物Hardness 硬度totalsuspendedsolids(TSS)总悬浮固体 sedimentationbasins沉淀池Anaerobic 厌氧的Aerobic 需氧的，好氧的chemicaloxygendemand(COD)生化需氧量4.2 New words and expressionsH4采用采用PP管及配件：根据给水设计图配置好管及配件：根据给水设计图配置好PP管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物4.2Newwordsandexpressionsself-purification自然自然净化化open-channel明渠明渠hydrograph水位水位图，水位曲，水位曲线intensity-duration-frequencycurves强强度度-持持续时间-频率曲率曲线retentionbasins贮水池水池moisture水分，湿度水分，湿度4.2 New words and expressionss5采用采用PP管及配件：根据给水设计图配置好管及配件：根据给水设计图配置好PP管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物4.3 Important sentences1.(第三段)Designobjectives2.Design objectives are generally established during the planning process.Traditionally,such objectives dealt only with runoff quantity and specified the desired levels of protection against flooding by specifying return periods of design rainfall events.The minor drainage,which includes underground sewers and small open channels and provides local convenience and prevention of water ponding,is typically designed for short return periods,from 1 to 10 years.The major drainage system conveys flood flows through urban areas and includes large sewers,the natural drainage system,swales,streets and other overland routes.This system is generally designed for return periods from 50 to 100 years.明确，指定明确，指定积水积水重现期重现期4.3 Important sentences(第三段第三段)D6采用采用PP管及配件：根据给水设计图配置好管及配件：根据给水设计图配置好PP管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物4.3 Important sentences1.(第六段)Rainfall data are used in urban runoff calculations in various forms,depending on the design approach and computational procedure used.The most common forms include intensity-duration-frequency curves,synthetic design storms,historical design storms,and actual or synthetic long-term rainfall records.Although the literature on rainfall data for storm sewer design is rather extensive the issues of uncertainties in rainfall inputs and their impact on calculated runoff flow have not been fully resolved.Uncertainties include errors in point measurements,and impacts of temporal and spatial distributions on estimates of catchment rainfall.Other uncertainties are introduced in the analysis of observed data by using various assumptions which may or may not be valid.It should be noted,however,that the impact of rainfall data uncertainties on calculated runoff flows is somewhat reduced by the fact that the catchment functions as a filter which dampens out some perturbations(real or spurious)in rainfall inputs.扰动扰动广阔的，广大的广阔的，广大的减弱减弱假的假的4.3 Important sentences1.(第六段第六段7采用采用PP管及配件：根据给水设计图配置好管及配件：根据给水设计图配置好PP管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物管及配件，用管件在管材垂直角切断管材，边剪边旋转，以保证切口面的圆度，保持熔接部位干净无污物4.4 Quiz一、专业词汇翻译（每个1分）1、贮水池 2、自然净化 3、水头损失 4、沉淀池 5、水位图 6、坡度线 7、反硝化作用 8、强度-持续时间-频率曲线9、gutter 10、dampen out 11、anaerobic 12、aerobic二、短句翻译（每题4分）1、The function of a drainage system in a building is to remove safely and quickly sanitary sewage,industrial wastes,and rainwater.2、The standards for water quality have significantly increased concurrent with a marked decrease in raw-water quality.4.4 Quiz8
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