helix
(mathematics) A curve on the surface of a cylinder or cone such that its angle to a plane perpendicular to the axis is constant; the three-dimensional curve seen in a screw or a spiral staircase.
(anatomy) Part of the large intestine; the final segment of the digestive system, after (distal to) the ileum and before (proximal to) the rectum. (Because the colon is the largest part of the larg...
plural of dragon
plural of ribald
技術者は幾何学的性質を解析するため、円柱の表面を巻きつく螺旋（円柱や円錐の表面上で、軸に垂直な平面に対して一定の角度を成す曲線）をモデル化した。
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