| 释义 |
螺旋luóxuán
1.像螺蛳壳纹理的曲线形{spiral; helix; curves akin to the veins of a spiral shell}:
～体{spiral form or structure}|～桨。{screw propeller}
2.简单机械,圆柱体表面有像螺蛳壳上的螺纹的叫阳螺旋,在物体孔眼里的螺纹叫阴螺旋。阴阳螺旋配合,旋转其中一个就可以使两者沿螺旋移动,螺纹越密,螺旋直径越大越省力。螺钉、螺栓、压榨机、千斤顶等都是螺旋的利用。{screw; spiral; simple mechanism consisting of a male screw (with spiral line on the exterior surface of a cylinder) and a female screw (with spiral line inside the bore of an object). When the two screws fit, turning one of them will move both following the helix. The denser the screw thread or the wider its diameter, the more energy-saving it becomes. Screws, bolts, mills, jacks, etc. are examples of the spiral in use.} |