超重、失重演示装置的制作

Facture of overweight and weightlessness demonstrating device

介绍了用简易材料制作超重、失重演示装置的方法及该装置的使用方法 .

This article gives a detailed introduction of how to use simple materials to make the overweight and weightlessness demonstrating device. It also gives an introduction of how to use the device.