一、仪器特点及用途超重和失重现象是比较抽象的,部分学生理解有困难,因此,增加一个演示实验是有必要的。本装置可演示超重失重现象,取材容易,原理简单,现象直观,效果明显,设计合理,思路巧妙,做工精良,外形美观。尤其突出的优点有以下三点: 1.能紧扣教材,和教材配合非常紧密,能 First, the instrument features and uses Overweight and weight loss phenomenon is more abstract, some students understand that there are difficulties, therefore, to add a demonstration experiment is necessary. The device can demonstrate the phenomenon of overweight loss, easy to draw, simple principle, intuitive phenomenon, obvious effect, reasonable design, clever ideas, excellent workmanship, beautiful appearance. The outstanding advantages include the following three points: 1. The teaching materials can be closely linked with the teaching materials.