富兰克林的风筝实验课件(nx)内容摘要：
string____the cross so that you can ______the kite. Build frame light wood reach Tie to Add to tie to control paper wooden sticks string kite The next three steps are very important. First, ___a very sharp piece of ______,pointing a foot or more. Second,_______a key to the end of the long string. Third,____a silk ribbon ___the string, just above the key. This ribbon which must not____ ____,will________you _____the electricity. fix metal fasten tie to get wet protect from string sharp metal key kite wooden sticks silk rib。阅读剩余 0%
本站所有文章资讯、展示的图片素材等内容均为注册用户上传(部分报媒/平媒内容转载自网络合作媒体)，仅供学习参考。
用户通过本站上传、发布的任何内容的知识产权归属用户或原始著作权人所有。如有侵犯您的版权，请联系我们反馈本站将在三个工作日内改正。