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使用肥皂时,人们经常会遇到肥皂黏在肥皂盒上拿不出来的情况。我受磁铁同性相斥原理的启发,设计了“弹簧”肥皂盒。我在肥皂盒中安装了一根固定杆,杆
When using soap, people often encounter soap sticking out of the soap box. Inspired by the principle of same-sex magnets in magnets, I designed a “spring” soapbox. I installed a rod in the soap box, rod