牽引因數 的英文怎麼說

中文拼音 [qiānyǐnyīnshǔ]
牽引因數 英文
pulling factor
  • 牽 : Ⅰ動詞1 （拉） lead along （by holding the hand the halter etc ）; pull 2 （牽涉） involve; implic...
  • 引 : Ⅰ動詞1 （牽引; 拉） draw; stretch 2 （引導） lead; guide 3 （離開） leave 4 （伸著） stretch 5 （...
  • 因 : Ⅰ動詞[書面語] （沿襲） follow; carry on Ⅱ介詞1 [書面語] （憑借; 根據） on the basis of; in accord...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 牽引 : 1 （拉） tow; drag; draw; haul; pull; draft 2 [中醫] traction; 牽引車 [機械工程] drafter; tractor...
  1. 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。
  2. At present, the electrical railway traction load in our country has great influence on power factor, negative sequence and hypo _ harmonics

    電力牽引負荷對電力系統的影響主要反映在功率因數、負序及高次諧波。
  3. At present, low power factor, abundant harmonics and negative sequence are the three main characters of electrical railway traction load

    功率因數低、諧波含量大和不對稱性是現代電力牽引負荷的三大技術特點。
  4. The fellow eye of 11 patients had abnormal macular appearance, 4 presented with macular hole, and the others showed irregular surface, central yellowish deposits, mottling change, or pseudomacular hole

    黃斑裂孔的成因是向多數因子所促成，諸如構造的薄弱，血液循環不足，老化，以及玻璃體的牽引等。
  5. This the production thread application plc carries on procedure control, and realizes to crowd out machine owner ' s electrical machinery and synchronization towing the mechanical and electrical machine is transferred fast ( ly ), and the installation has the good man - machine interface, and all technology parameters all can be set up and show by way of touching the screen, and producing to consult the menu, the order name was formerly fixed in the input, and whole production line just can be according to primary pipe specifications and speed production fixing every time ; cutting the function voluntarily fixed long ( ly ) cuts, and a pattern head temperature is controlled to use the import intellect warm accuse table ( making the temperature deviation within ), therefore having pledged the quality of tube

    本生產線採用plc進行程序化控制，實現擠出機主電機、牽引機電機的同步調速，並設置有良好的人機界面，所有工藝參數均可通過觸摸屏進行設置和顯示，每次生產只需查閱菜單，輸入原先設定序號，整條生產線就可按原設定的管子規格和速度生產；切割機能自動定長切割，模頭溫度控制採用進口智能溫控表（使溫度偏差在1內） ，因此保證了管材的質量。
  6. This thesis demonstrates a " ac - dc - ac locomotive emulation experiment platform " system, which is used to simulate behaving environment of locomotive system in several control circumstance and obtain kinds of performance parameters, so it contributes to the design of locomotive. to user - computer interaction, this thesis devises corresponding graphical user interfaces, so users can configure various modules " and controllers / parameters with knowing little about the details of this emulation system

    本論文擬構造「交?直?交型電力機車模擬試驗臺」一系統，模擬電力機車系統在各種控制條件下（如牽引、制動等）的運作情況，觀測各種性能指標參數（如變壓器一次側電壓/電流/功率因數、牽引電機電壓/電流、牽引力、機車速度等） ，這對于電力機車的設計和運行具有一定的指導意義。
  7. Fristly, according to the non - linear characteristics of twelve - phase rectifier, the thesis gives the calculation model for a short circuit in the subway traction power supply networks which provides the academic foundation for the design of the setting values and the simulation of protection. secondly, the thesis designs the dc feeder protection and control of subway, and gives the principle of setting accordingly, after it analysizes the characteristics of electric current under tow load and short circuit and considers severel factors. to validate the rationality of the design, the thesis simulates the transient electric current under two work conditions ( starting and passing the insulation ) ahd short circuit

    其次，本文在詳細分析地鐵牽引負荷電流和饋線短路故障電流特點的基礎上，考慮了直流保護系統設計應注意的幾個因素，對地鐵饋線保護與控制進行配置，給出了相應的保護整定原則，並針對某一地鐵供電系統在詳細分析了兩種工況（機車起動與過分段絕緣）的電流暫態過程，得到了電流計算的數字模型，結合前面提出的短路模型，進行了地鐵饋線保護的模擬，經模擬表明本文的保護設計是合理的。
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