therm%EC%97%90%EC%84%9C sliding %EC%B0%BD%ED%98%B8%2C %EB%8F%84%EC%96%B4 %EB%AA%A8%EB%8D%B8%EB%A7%81 %EC%8B%9C %EC%A7%88%EB%AC%B8%EC%9D%B4 %EC%9E%88%EC%8A%B5%EB%8B%88%EB%8B%A4.