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吊架中心轴#4602022582
中心轴一般是指把平面或立体分成对称部分的直线；是指一个物体或一个三维图形绕着旋转或者可以设想着旋转的一根直线，也叫轴线。
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The central axis generally refers to a straight line that divides a plane or solid into symmetrical parts; It refers to a straight line, also known as an axis, around which an object or a three-dimensional shape rotates or can be imagined to rotate.
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