https://blog.gongquiz.com/2022/09/16/%eb%8b%a4%ec%9d%8c-%ec%a4%91-%ed%8e%8c%ed%94%84%ec%9d%98-%ea%b3%b5%eb%8f%99%ed%98%84%ec%83%81cavitation%ec%9d%84-%eb%b0%a9%ec%a7%80%ed%95%98%ea%b8%b0-%ec%9c%84%ed%95%9c-%eb%b0%a9%eb%b2%95%ec%9c%bc/