https://blog.wongcw.com/2022/12/13/%e9%ba%bb%e7%9c%81%e7%90%86%e5%b7%a5%e5%ad%b8%e9%99%a2%e7%9a%84%e7%98%a6%e8%ba%ab%e7%89%88%e5%a4%aa%e9%99%bd%e8%83%bd%e9%9b%bb%e6%b1%a0%e4%bd%bf%e6%9c%83%e7%99%bc%e9%9b%bb%e7%9a%84%e5%b1%8b%e9%a0%82/
麻省理工學院的瘦身版太陽能電池使會發電的屋頂只增重20公斤