在高中《物理》第一册 (试验修订本·必修 )和高中图 1　　　图 2《物理》(必修 )第一册中 ,都是利用如图 1所示的装置来演示微小形变的 .在教学中按照此法演示 ,因液面升降的幅度很小 ,很难取得预期的效果 .笔者经研究发现 ,若将此装置略加改动 ,并添加必要的步骤 ,那么这一装 In the first book of Physics “Volume 1 (Test Revision) and High School Figure 1 and Figure 2 ”Physics" (Compulsory), the first book uses the device shown in Figure 1 to demonstrate the small deformation. In accordance with this method, it is difficult to achieve the desired results because the magnitude of liquid level rise and fall is small. The author found through research that if this device is slightly modified and necessary steps are added, then this