https://www.hk01.com/%E8%B2%A1%E7%B6%93%E5%BF%AB%E8%A8%8A/420136/%E6%96%B0%E5%9C%B0-%E5%90%8C%E5%BF%83%E6%9D%91-%E9%81%8E%E6%B8%A1%E6%80%A7%E6%88%BF%E5%B1%8B-%E8%B1%A1%E5%BE%B5%E5%BC%8F1%E5%85%83%E5%80%9F30%E8%90%AC%E5%91%8E%E8%BE%B2%E5%9C%B0
可以看看有設計圖