cylindroid
曲線島(a.)圓柱形的
cyl·in·droid /ˈsɪlənˌdrɔɪd, səˈlɪn-/ 名詞
圓柱狀的,圓柱狀體
Cyl·in·droid n.
1. A solid body resembling a right cylinder, but having the bases or ends elliptical.
2. Geom. A certain surface of the third degree, described by a moving straight line; -- used to illustrate the motions of a rigid body and also the forces acting on the body.
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