椭圆柱与组成要素垂直的所有圆柱形表面或柱体的部分是椭圆形的柱体

A cylindrical surface or solid all of whose sections perpendicular to the elements are elliptical.

钻心圆柱形物质，用于垂直地钻入地下然后取出以测定石油或天然气的组成或存在

A cylindrical mass drilled vertically into the earth and removed from it to determine composition or presence of oil or gas.

绞盘，卷扬机一种用于吊起重物的装置。该装置包括一垂直的线轴形圆筒，由人力或机器使之旋转，在其周围绕有钢丝绳

An apparatus used for hoisting weights, consisting of a vertical spool-shaped cylinder that is rotated manually or by machine and around which a cable is wound.