文档介绍：液压油理论一一毕业设计外文文献翻译(中英文翻译、外文翻译)夕卜文原文:TheoryoffluidpropertiesWewillconcentratemainlyonthreefluidpropertiesinthischapter:,cavitationphenomenaandbyexpansionofapipe,:Densityhasdimensionsof[M/L]andisexpressedinkilogramspercubicmeter[kg/m].Asinentionedpreviouslythedensityisafunctionofthepressureandthetemperature:ThisfunctioncanbeapproximatedbythefirstthreetermsofaTaylorseries:Thiscanalsobeexpressedas:,thetwocoefficientsQandBcanalsobeexpressedas:,:wherePisexpressedinunitsPa(orm/N).ircuitthemassisconstant,andhence:pressibilitycoefficient0weobtain:MoreusuallyweusethebulkmodulusBalsoknownasthevolumetricelasticitymodulus: