外文翻譯----液壓站及液壓元件發(fā)展概況-液壓系統(tǒng)-文庫吧資料
2025-01-27 09:12本頁面
【正文】 than 5,000 specifications have been basically cater to the different types of mainframe products to the general needs, plete sets of equipment for major varieties of matching rate was over 60%, and started a small amount of exports. 1998 pieces of homemade hydraulic output million. sales of about 28 billion (of which about 70% mechanical systems)。 Pneumatic industry output 419 million yuan, accounting for world No. 10. (2) the current supply and demand profiles Through the introduction of technology, independent development and technological innovation, and highpressure piston pump, gear pumps, vane pump, General Motors hydraulic valves, tanks, Nonlubricated aerodynamic pieces and various seals of the first large technology products has increased noticeably. stability of the mass production may, for various mainframe products provide a level of assurance. In addition, hydraulic and pneumatic ponents of the CAD system, pollution control, proportional servo technology has scored some achievements, and is already in production. Currently, hydraulic, pneumatic and seals products total about 3,000 species, more than 23,000 specifications. Among them, there are 1,200 hydraulic varieties, more than 10,000 specifications (including hydraulic products 60 varieties 500 specifications)。s industry hydraulic billion yuan, accounting for the world39。s annual output of hydraulic ponents have nearly 200,000 in 1973, machine tools, agricultural machinery, mechanical engineering industries, the production of hydraulic parts factory has been the professional development of more than 100 and an annual output more than one million. an independent hydraulic manufacturing industry has begun to take shape. Then, hydraulic pieces of fake products from the Soviet Union for the introduction of the product development and technical design bining the products to the pressure, Hypertension, and the development of the electrohydraulic servo valves and systems, hydraulic application areas further expanded. Aerodynamic than the start of the industrial hydraulic years later, in 1967 began to establish professional pneumatic ponents factory, Pneumatic Components only as modity production and sales. Sealed with rubber and plastics, mechanical seals and sealing flexible graphite sealing industry, the early 1950s from the production ordinar y Orings. rubber and plastics extrusion, such as oil seal sealing and seal asbestos products start to the early 1960s, begun production of mechanical seals and flexible graphite sealing products. 1970s, the burning of the former Ministry, a Ministry, the Ministry of Agricultural Mechanization System, a group of professional production plants have been established, and the official establishment of industries to seal industrial development has laid the foundation for growth. Since the 1980s, in the country39。80~9039。 6039。 1 Hydraulic Station and the development of hydraulic ponents Profiles Hydraulic Pump Station also known as the stations are independent h ydraulic device. It requested by the oil gradually. And controlling the hydraulic oil flow direction, pressure and flow rate, applied to the mainframe and hy draulic devices separability of hydraulic machinery. Users will be provided after the purchase hydraulic station and host of implementing agencies (motor oil or fuel tanks) connected with tubing, Hydraulic machinery can be realized from these movement
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