【摘要】 介绍了使用AutoCAD测量圆盘年轮宽度的方法与步骤。采用计算比例尺的方法对AutoCAD中的圆盘数字照片进行缩放达到实物尺寸,再使用AutoCAD中的测量工具进行东西和南北两方向上的年轮宽度测量,通过模拟圆盘对圆盘数字照片的变形误差进行了分析,其精度达到了生产要求,且此方法方便实用。更多还原

【Abstract】 The method and procedure to handle the disk digital photo by using AutoCAD was introduced in this paper.The digital photo was zoomed into the physical size through calculating the scale,then the width of the annual ring on the east-west and south-north direction was measured by using the measuring tool in AutoCAD.And the error of the disk digital photo’s deformation was analysed by disc simulation.The method is accurate,convenient and practical in the production practices.更多还原