首页 / 官方藏书 / How to Make Electrical Machines / Containing Full Directions for Making Electrical Machines, Induction Coils, Dynamos, and Many Novel Toys to Be Worked by Electricity / PART III. THE ELECTRIC DRUM.

PART III. THE ELECTRIC DRUM.

How to Make Electrical Machines / Containing Full Directions for Making Electrical Machines, Induction Coils, Dynamos, and Many Novel Toys to Be Worked by Electricity · R. A. R. Bennett · 第 2 / 4 章