机械专业毕业设计外文翻译--什么是液压-液压系统(编辑修改稿)

机械专业毕业设计外文翻译--什么是液压-液压系统(编辑修改稿)内容摘要：

as forging steel. History of the development of hydraulic And air pressure drive hydraulic fluid as the transmission is made according to the 17th century, Pascal39。 s principle of hydrostatic pressure to drive the development of an emerging technology, the United Kingdom in 1795 Joseph (Joseph Braman ,17491814), in London water as a medium to form hydraulic press used in industry, the birth of the world39。 s first hydraulic press. Media work in 1905 will be replaced by oilwater and further improved. World War I (19141918) after the extensive application of hydraulic transmission, especially after 1920, more rapid development. Hydraulic ponents in the late 19th century about the early 20th century, 20 years, only started to enter the formal phase of industrial production. 1925 Vickers (F. Vikers) the invention of the pressure balanced vane pump, hydraulic ponents for the modern industrial or hydraulic transmission of the gradual establishment of the foundation. The early 20th century Constantine (G • Constantimsco) fluctuations of the energy carried out by passing theoretical and practical research。 in 1910 on the hydraulic transmission (hydraulic coupling, hydraulic torque converter, etc.) contributions, so that these two areas of development. The Second World War (19411945) period, in the United States 30% of machine tool applications in the hydraulic transmission. It should be noted that the development of hydraulic transmission in Japan than Europe and th。