KeywordsandExpressionsChord:弦桿Jackcase:提升齒輪箱Cylinder:圓柱Truss:桁架22.1 LegsFigure22.1 Componentsofajack-upplatformlegLegsmaybeeithershelltypeortrusstype.Shelltypelegsmaybeconsideredaseitherstiffenedorunstiffenedshells.Legsmayhaveindividualfootingsormaybeatta (共 6102 字) [閱讀本文] >>