【英语翻译书名是:MechanicalEngineeringDesign(fifthedition)句子是：1.Themultipleandsubmultipleprefixesinstepsof1000onlyarerecommended.2.Whenraisingprefixedunitstoapower,itispermissible,thoughnotoftenconvenient,touse】

　　英语翻译

　　书名是:MechanicalEngineeringDesign(fifthedition)

　　句子是：

　　1.Themultipleandsubmultipleprefixesinstepsof1000onlyarerecommended.

　　2.Whenraisingprefixedunitstoapower,itispermissible,thoughnotoftenconvenient,tousethenonpreferredprefixessuchascm2ordm3.

　　3.Asageneralrule,itisbothconvenientandgoodpracticetoselectprefixes

　　suchthatthenumberstringswillcontainnomorethanfourdigitstothe

　　leftofthedecimalpoint.

　　Byapplyingthisrule,wefindthatsomeofthepreferredunitsarekilopoundsper

　　squareinch(Kpsi)andmegapascals(Mpa)forstress,poundspersquareinch(psi)and

　　kilopascals(kpa)forairorhydraulicpressure,pounds(lb)andkilonewtons(KN)forforce,

　　andinchestothefourthpowerandcentimeterstothefourth

　　powerforsecondmomentofarea.

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