一、制作原理传统的日地运动演示仪是以黄道面为水平面,地轴与黄道面斜交66.5度,利用机械轴制作而成。新型“单臂悬挂式日地仪”则是以赤道面为水平面,黄道面与赤道面斜交23.5度,利用重力保持地轴垂直于赤道面的原理制作而成。二、使用意义与传统日地仪相比较,“单臂悬挂式日地仪”(以下简称日地仪)设计新颖,易启发学生的创新思维和提高实际动手能 First, the production principle of the traditional Japanese sports demonstration instrument is the ecliptic plane as the horizontal plane, the ground axis and the ecliptic plane oblique 66.5 degrees, using mechanical shaft made. The new type of “single-arm suspension type instrument” is based on the equatorial plane as a horizontal plane, and the ecliptic plane is inclined at 23.5 degrees to the equatorial plane, and is made by using the principle of gravity to keep the ground axis perpendicular to the equatorial plane. Second, the use of the meaning and the traditional Japanese instrument compared to “single-arm suspension type instrument” (hereinafter referred to as Japan instrument) a novel design, easy to inspire students’ innovative thinking and improve the actual hands-on