electric railways 中文意思是什麼

electric railways 解釋
電氣鐵路
  • electric : adj. 1. 電的；帶電的；起電的，導電的，發電的，電動的。2. 令人激動的，緊張的，驚人的。3. 〈美口〉（樂曲的）用電吉他演奏的。n. 〈口語〉1. 帶電物體。2. 電動車輛。
  • railways : 鐵道部
  1. Two kinds of new on - line monitoring methods, which are based on measuring primary, secondary currents and voltages to calculate the short - circuit reactances of windings for detecting the deformation windings of power transformer, are proposed in the paper. the methods used for on - line measuring the short - circuit reactances of traction transformer in electric railways, are designed

    本文提出了兩種在線監測變壓器繞組變形的方法，通過在線監測變壓器繞組原、次邊的電壓和電流量，實時計算變壓器繞組的短路電抗來判斷變壓器繞組變形情況，並對電氣化鐵路主要接線型式的牽引變壓器繞組變形的在線監測方案進行了設計。
  2. In the models, the iron core nonlinearly of the traction transformer and the magnetic hysteresis effect without the b - h curve are considered. having tested by digital simulation, the winding parameter has not changed in the state of external fault or magnetizing inrush etc. but the winding parameter has obviously changed in state of inter fault or inter - turn fault. ( 3 ) the rules three phases converted to two phases of traction transformer in electric railways are developed in this paper

    （ 3 ）利用牽引變壓器磁鏈平衡方程，建立了基於系統辨識理論的雙繞組單相接線牽引變壓器、阻抗匹配平衡牽引變壓器及scott （斯科特）接線牽引變壓器的「灰箱」模型，該模型考慮了牽引變壓器鐵芯非線性和磁滯效應，但又不直接反映在模型中，並且無需鐵芯的b - h曲線數據。
  3. Subjection of nature ' s forces to man, machinery, application of chemistry to industry and agriculture, steam - navigation, railways, electric telegraphs, clearing of whole continents for cultivation, canalisation of rivers, whole populations conjured out of the ground - - what earlier century had even a presentiment that such productive forces slumbered in the lap of social labour

    自然力的征服，機器的採用，化學在工業和農業中的應用，輪船的行駛，鐵路的通行，電報的使用，整個整個大陸的開墾，河川的通航，彷彿用法術從地下呼喚出來的大量人口， - - - -過去哪一個世紀料想到在社會勞動里蘊藏有這樣的生產力呢？
  4. At present, differential protection is often used as the main protection for traction transformers. however, the existing of certain factors, such as magnetizing inrush, over - excitation, ct saturation and mismatching of ct ratio, will result in that it is hard to distinguish state current and fault current, and differential protection misoperation or maloperation, then secure operation of electric railways system will be threatened

    目前，牽引變壓器通常採用差動保護作為主保護，但是在某些因數的影響下差動保護並不能準確的區分牽引變壓器內部故障或非內部故障，如故障電流與變壓器處于勵磁涌流、過勵磁， ct飽和及ct變比不匹配等情況下的狀態電流就很難準確的區分，可能造成保護誤動或拒動，從而危及整個鐵道電氣化系統的安全運行。
  5. Measurement method of radiated radio interference caused by moving electric locomotive on ac electrified railways

    交流電氣化鐵道電力機車運行產生的無線電輻射干擾的測量方法
  6. Electric signalling systems for railways

    鐵路用電氣信號裝置
  7. It satisfies the requirements of china standard ( gb / t 14549 - 93 ), the harmonic and negative sequence component leaded by the input of electrified railways traction load are measured in si yan qiao substation. this thesis mainly analyzes the effects on the electric elements, feeding system losses, protection system and automatic device, and proposes corresponding schemes according to the problems occurring in si yan qiao substation

    本文實測了瀘州石燕橋變電站電氣化鐵路牽引負荷注入電網的諧波和負序分量，著重分析了電力系統中電氣設備、供電網線損、繼電保護和自動裝置受電氣化鐵路諧波和負序的影響，並針對石燕橋變電站出現的問題提出了對策。
  8. In order to prevent short current, there are insulators between electric phase. on the high - speed railways, these are many neutral sections, chauffeurs are very exhaustion in manual mode. so the mode of manual passing over of neutral section has not fit the development of railway

    在準高速、高速線路上，機車每小時要通過十幾個分相點，頻繁通過分相區時，手動操作不僅耗費司機精力，而且過多地分散了司機行車的注意力，對行車安全極為不利。
  9. With fully investingation and research, this paper analyzed some prlblems based on the background of pipeline bureau of chinese petroleum gas and pipeline branch company of chinese petroleum gas stcok company. the main content include : expounded the stock company based on key business and remainnder enterprise with the real example ; sumed up the question betweenn listed company and the remainder enterprise ; aanalysed historical reason and realistic reason why the question exists with the method at last. the theory method and model frame adopted in this paper are not only suitable for the petrochina, but also have guide reference for the following reforms of large - scale, super - huge state - owned enterprises such as coal. water conservancy, electric powers, railways, civil aviations, etc

    本文以中國石油天然氣管道局和中國石油天然氣股份公司管道分公司為背景，用實證分析的方法，在充分調研的基礎上闡明了基於核心業務的上市公司和存續企業的形成；歸納總結了上市公司和存續企業之間存在的問題；以系統分析方法為指導思想，運用邏輯推理的方法分析了問題存在的歷史原因和現實原因；面對具有中國特色的企業，既要保證改革的成功，提高企業的競爭能力，又要保證社會的穩定，在充分考慮國家、社會、投資主體、職工個人等多方利益的基礎上，提出用戰略聯盟的思想來指導二者之間的關聯交易；指出上市公司、存續企業和集團公司三方應從不同角度做出思想意識的轉變；最後用idefo方法對聯盟的運行進行結構功能設計。
  10. Traction transformers are important devices in electric railways system, and secure operation has significant influence on the stability of electric railways system

    =牽引變壓器是鐵道電氣化系統中重要的電氣設備，在電氣化鐵道系統中佔有極其重要的地位，它的安全運行與否，直接關繫到鐵道電氣化系統能否連續穩定的工作。
  11. Widely used in the electricity system and nonferrous metals metallurgy, iron and steel, chemical industry, electric railways, shipbuilding and other fields

    可廣泛應用於電力系統和有色冶金鋼鐵化工電氣化鐵路造船等領域。
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