专业英语3.2new

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1、专业英语SpecialtyEnglish专业：高速铁道技术总学时：24学时Unit3HighwaySubgradeIntroduction(路基概述)Lesson2ConstructionofHighwaySubgrade(路基施工)SpeakingWhatisyourdream?NewWordsandExpressionsgeological[dʒɪə‘lɒdʒɪkl]adj.地质的survey[sə‘veɪ]n.调查laying-outn.布置，划线rollingn.滚压bulldozer[‘bʊldəʊzə]n.推土机lev

2、elingn.水准测量certification[,sə:tifi‘keiʃən]n.证明demarcate[‘diːmɑːkeɪt]v.划定dampness['dæmpnəs]n.潮湿，湿气soilsourcen.土壤源地质划定划线滚压推土机NewWordsandExpressionswaterconservancy[kən'sɜːv(ə)nsɪ]n.水利inaccordancewithn.依照embankment[ɪm‘bæŋkmənt]n.路堤hierarchical[haɪə‘rɑːkɪk(ə)l]adj.分层的on-si

3、teadj.现场的frozenadj.冻结的antifreezingadj.防冻的water-resistinglayern.隔水层NewWordsandExpressionsthermal['θɜːm(ə)l]insulation[ɪnsjʊ'leɪʃ(ə)n]layern.隔温层capillary[kə'pɪlərɪ]watern.毛细水adverse[‘ædvɜːs]effectn.不利影响cliff[klɪf]n.悬崖，绝壁suspensionn.悬浮steepn.峭壁retaining[rɪ‘teinɪŋ]walln.挡

4、土墙escape[ɪ‘skeɪp]v.避开1、Subgradeinroadconstruction,largeprojects,coveringawide，oftenthekeytocontroltheconstructionschedule,sorequirements:asfaraspossiblealongwithacombinationofirrigationandwaterconservancy（水利）constructionandstrivetosavespace.inaccordancewith（依照）stand

5、arddesign,strictcontrolofconstructionquality,toensuresufficientstrengthandroadbedstability.路基工程在道路建设中，工程量大、占地广，常为控制施工进度的关键，故要求：①尽可能与沿线农田水利建设相结合并力争节约用地；②按照标准设计，严格控制施工质量，保证路基具有足够的强度和稳定性；strengtheningworkstoimprovedrainageandprotection,alongtheriverembankment（路堤）shouldb

6、ecarefulnottobedestroyedbyflood.fillprojectshouldbecautiousintheselectionandhierarchical（分层的）compactionofsoil,itsdensityandmoisturecontenton-site（现场的）control.Thefrozen（冻结的）areashouldbesetantifreezing（防冻的）layerorawater-resistinglayer（隔水层）andathermalinsulationlayer（隔温

7、层）,cutoffthecapillarywater（毛细水）,reducetheadverseeffects（不利影响）ofnegativetemperature.③搞好排水和防护加固工程，沿河路基应注意不被洪水淹没冲毁；④填方工程应慎选土质并分层夯实，对其密实度和含水量进行现场控制；⑤冰冻地区还应设置防冻层或设置隔水层和隔温层，切断毛细水，减少负温差的不利影响；Andwhentheroutethroughthecliffs（悬崖峭壁）tobuildsuspension（悬浮）wayorthebridge,steep（陡峭的）

8、hillsidetoconstructionofretainingwall（挡土墙）,stoneslopeprotectionorfootprotectionengineeringtoensureembankmentandthemountainst