, lift drive mechanisms were powered by steam and water hydraulic pistons.- 과거에는, 리프트드라이브 메커니즘은 증기와 물 ... 를 공급받습니다.Design of Elevator- 엘리베이터 디자인Lifts began as simple rope or chain hoists.- 리프트는 간단 로프 또는 체인 ... 승강 장치로 시작되었습니다.A lift is essentially a platform that is either pulled or pushed up by a mechanical