知识贝壳
知识贝壳
所属栏目：海洋工程英语
KeywordsandExpressionsChord:弦杆Jackcase:提升齿轮箱Cylinder:圆柱Truss:桁架22.1 LegsFigure22.1 Componentsofajack-upplatformlegLegsmaybeeithershelltypeortrusstype.Shelltypelegsmaybeconsideredaseitherstiffenedorunstiffenedshells.Legsmayhaveindividualfootingsormaybeatta ......（本文共 6102 字 ） [阅读本文] >>