外文翻译--液压系统和气压系统.doc

HYDRAULICSYSTEMANDPEUMATICSYSTEMHUIXIONGWAN1,JUNFAN21SCHOOLOFMECHANICALSCIENCEANDENGINEENING,HUAZHONGUNIVOFSCIENCEANDTECHNOLOGY,WUHAN,430074,CHINA2SCHOOLOFLOGISTICSENGINEENING,WUHAN,UNIVOFSCIENCEANDTECHNOLOGY,WUHAN,430063,CHINAABSTRACTHYDRAULICSYSTEMISWIDELYUSEDININDUSTRY,SUCHASSTAMPING,GRINDINGOFSTEELTYPEWORKANDGENERALPROCESSINGINDUSTRIES,AGRICULTURE,MINING,SPACETECHNOLOGY,DEEPSEAEXPLORATION,TRANSPORTATION,MARINETECHNOLOGY,OFFSHOREGASANDOILEXPLORATIONINDUSTRIES,INSHORT,FEWPEOPLEINTHEIRDAILYLIVESDONOTGETCERTAINBENEFITSFROMTHEHYDRAULICTECHNOLOGYSUCCESSFULANDWIDELYUSEDINTHEHYDRAULICSYSTEMSSECRETLIESINITSVERSATILITYANDEASEOFMANEUVERABILITYHYDRAULICPOWERTRANSMISSIONMECHANICALSYSTEMSASBEINGNOTLIKETHEMACHINEGEOMETRYCONSTRAINTS,INADDITION,THEHYDRAULICSYSTEMDOESNOTLIKETHEELECTRICALSYSTEM,ASCONSTRAINEDBYTHEPHYSICALPROPERTIESOFMATERIALS,ITPASSEDALMOSTNOAMOUNTOFPOWERCONSTRAINTSKEYWORDSHYDRAULICSYSTEM,PRESSURESYSTEM,FLUIDTHEHISTORYOFHYDRAULICPOWERISALONGONE,DATINGFROMMAN’SPREHISTORICEFFORTSTOHARNE