Learn About 在線電子書 圖書標籤:
發表於2024-11-25
Learn About 在線電子書 pdf 下載 txt下載 epub 下載 mobi 下載 2024
This lively and practical book will tell you how magnets make engines work, how they help you find your way, and even how magnets can be switched on and off. Fascinating and easy-to-do projects, such as how to make your own magnet out of a paper-clip or a nail, or how to turn a bowl of water and needle into a compass, will help you to understand the principles of magnetism.
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Learn About 在線電子書 pdf 下載 txt下載 epub 下載 mobi 下載 2024