【正文】 aerodynamic pieces of the total demand of about 5 million, with sales more than 700 million yuan。 外文資料翻譯 1 Hydraulic system Introduction Hydraulic Pump Station also known as the stations are independent hydraulic device. It requested by the oil gradually. And controlling the hydraulic oil flow direction, pressure and flow rate, applied to the mainframe and hydraulic 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 movements and the work cycle. Hydraulic pump station is installed, Manifold or valve bination, tanks, a bination of electrical boxes. Functional ponents : Pump device is equipped with motors and pumps, hydraulic station is the source of power. to mechanical energy into hydraulic oil pressure can be. Manifold from hydraulic valve body and channel assembled. Right direction for implementation of hydraulic oil, pressure and flow control. Valve portfolio plate valve is installed in up board after board connects with the same functional IC. Tank plate welding semiclosed containers, also loaded with oil filtering work, air filters, used oil, oil filters and cooling. Electrical boxes at the two patterns. A set of external fuse terminal plate。按金額計(jì)，目前進(jìn)口產(chǎn)品的國(guó)內(nèi)市場(chǎng)占有率約為 30%。目前我國(guó)已和美國(guó)、日本、德國(guó)等國(guó)著名廠商合資或由外國(guó)廠商獨(dú)資建立了柱塞泵 /馬達(dá)、行星減速機(jī)、轉(zhuǎn)向器、液壓控制閥、液壓系統(tǒng)、靜液壓傳動(dòng)裝置、液壓件鑄造、氣動(dòng)控制閥、氣缸、氣源處理三聯(lián)件、機(jī)械 密封 、橡塑密封等類產(chǎn)品生產(chǎn)企業(yè) 50 多家，引進(jìn)外資 2 億多美元。 我國(guó)液壓（含液力，下同）、氣 動(dòng)和密封件工業(yè)發(fā)展歷程，大致可分為三個(gè)階外文資料翻譯 2 段，即： 20 世紀(jì) 50 年代初到 60 年代初為起步階段； 60~70 年代為專業(yè)化生產(chǎn)體系成長(zhǎng)階段； 80~90 年代為快速發(fā)展階段。并控制液壓油流的方向、壓力和流量，適用于主機(jī)與液壓裝置可分離的各種液壓機(jī)械上。這時(shí)，液壓件產(chǎn)品已從仿蘇產(chǎn)品發(fā)展為引進(jìn)技術(shù)與自行設(shè)計(jì)相結(jié)合的產(chǎn)品，壓力向中、高壓發(fā)展，并開發(fā)了電液伺服閥及系統(tǒng)，液壓應(yīng)用領(lǐng)域進(jìn)一步擴(kuò)大。 通過技術(shù)引進(jìn)，自 主開發(fā)和技術(shù)改造，高壓柱塞泵、齒輪泵、葉片泵、通用液壓閥門、油缸、無油潤(rùn)滑氣動(dòng)件和各類密封件第一大批產(chǎn)品的技術(shù)水平有了明顯的提高，并可穩(wěn)定的批量生產(chǎn)，為各類主機(jī)提高產(chǎn)品水平提供了保證。在實(shí)際系統(tǒng)中控制器之間的通信是由雙 RS422 傳遞大量數(shù)據(jù)實(shí)現(xiàn)的。s growth stage for the rapid development stage. Which, hydraulic industry in the early 1950s from the machine tool industry production of fake Soviet Union grinder, broaching machine, copying lathe, and other hydraulic drive started, Hydraulic Components from the plant hydraulic machine shop, selfoccupied. After entering the 1960s, the application of hydraulic technology from the machine gradually extended to the agricultural machinery and mechanical engineering fields, attached to the original velocity of hydraulic shop some stand out as pieces of hydraulic professional production. To the late 1960s, early 1970s, with the development of mechanized production, especially in the second automobile factory in providing efficient, automated equipment, along with the Hydraulic Components manufacturing has experienced rapid development of the situation, a group of SME have bee professional hydraulic parts factory. 1968 China39。s market has basically bee a structural surplus of the characteristics of the buyer39。 Pneumatic are 1,350 varieties, more than 8,000 specifications。 (1)企業(yè)產(chǎn)品開發(fā)能力不強(qiáng)，技術(shù)開發(fā)的水平和速度不能完全滿足先進(jìn)主機(jī)產(chǎn)品、重大技術(shù)裝備和進(jìn)口設(shè)備的配套和維修需要； (2)不少企業(yè)的制造工藝、裝備水平和管理水平都較落后，加上質(zhì)量意識(shí)不強(qiáng)，導(dǎo)致產(chǎn)品性能水平低、質(zhì)量不穩(wěn)定、可靠性差，服務(wù)不及外文資料翻譯 5 時(shí)，缺乏使用戶滿意和信賴的名牌產(chǎn)品； (3)行業(yè)內(nèi)生產(chǎn) 專業(yè)化程度低，力量分散，低水平重復(fù)嚴(yán)重，地區(qū)和企業(yè)之間產(chǎn)品趨同，盲目競(jìng)爭(zhēng)，相互壓價(jià)，使企業(yè)效益下降，資金缺乏、周轉(zhuǎn)困難，產(chǎn)品開發(fā)和技術(shù)改造投入不足，嚴(yán)重地制約了行業(yè)整體水平的提高以及競(jìng)爭(zhēng)實(shí)力的增強(qiáng)； (4)國(guó)內(nèi)市場(chǎng)國(guó)際化程度日益提高，國(guó)外公司紛紛進(jìn)入中國(guó)市場(chǎng)參與競(jìng)爭(zhēng)，加上國(guó)內(nèi)私營(yíng)、合作經(jīng)營(yíng)、個(gè)體、三資等企業(yè)的崛起，給國(guó)有企業(yè)造成愈來愈大的沖擊。這充分反映了產(chǎn)銷基本銜接。從此進(jìn)入了快速發(fā)展期，先后引進(jìn)了 60 余項(xiàng)國(guó)外先進(jìn)技術(shù)，其中液壓 40 余項(xiàng)、氣動(dòng) 7 項(xiàng)，經(jīng)消化吸收和技術(shù)改造