斷續頻率 的英文怎麼說

中文拼音 [duànxùbīnlǜ]
斷續頻率 英文
interrupted frequency
  • 斷 : Ⅰ動詞1 （分成段） break; snap 2 （斷絕;隔斷） break off; cut off; stop 3 （戒除） give up; abstai...
  • 續 : Ⅰ形容詞（連接不斷） continuous; successive Ⅱ動詞1 （接在原有的后頭） continue; extend; join 2 （...
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 斷續 : interrupted; chopping; make and break斷續曝光 [攝影學] intermittent exposure; 斷續波 discontinuou...
  • 頻率 : frequency; rate
  1. The dynamo runs at rull speed to drive main shaft, then the main shaft makes the emulsifying wings in emulsification grove rotate, which absorbs the liquid in its brand groove into ring groove through guide vanes on upper and lower sides of the groove. the vanes spins circularly at high speed with the main shatf as center, and the blade and emulsificaton groove cut and crush it continuously. after that. it gers squeezed by the vanes highspeed centrifugal rotation. at last, it finishes isotropt emulsification tratment within extremely short time after continuous circulating mixing

    由電動機全速運轉帶動主軸，經主軸轉動乳化框槽內之乳化翼片，使其將桶槽內之液體經框槽上、下兩側之導流葉片吸入環狀框槽內，經以主軸為中心高速圓周旋轉葉片；連續使乳化翼端刀面與乳化框間極小之間系高頻率之強力切割剪斷、粉碎，再借葉片高速離心旋轉排擠，持續循環混合，以極短之時間即可完成均質乳化之處理。
  2. The temperature range is - 30 ~ 80. the topology of the step - up dc / dc converters and its basic principle is first analyzed in this thesis. then based on the conventional pfm control scheme, a discrete pulse frequency modulation is presented and the state space average model related to the ccm ( continue current mode ) and dcm is established

    然後在傳統的脈沖頻率調制方式的基礎上，分析了一種離散脈沖頻率調制方式，並建立了這種調制方式下升壓型dc / dc變換器在電流連續（ ccm ）工作模式和電流斷續（ dcm ）工作模式的狀態空間平均模型。
  3. High - frequency link power converters are receiving increasing attention. when the input frequency of ac - ac converter is quite high, such as 20khz or above, in order to make sure the converter switching action is restricted to the zero crossing point of the link voltage, the switching cycle becomes discrete pulse spectrums, however, the conventional pwm converters are ruled out because they would fail either to the efficiency or the low - distortion criteria

    當交-交變頻器的輸入頻率非常高，通常為20khz時，為了在零電壓條件下實現逆變器開關管的通斷，變換器的開關時刻必須選擇在高頻交流電壓脈沖為零時，這意味著變換器開關時刻在時間軸上成為不連續的點，而常規的硬開關pwm變換器是將開關時刻選擇在任意時刻。
  4. The situation of yellow river dry - up is gradually rigorous. it has being influenced the development of the lower reaches of yellow river and the implement of strategy on developing the western areas. based on analyzing the harmfulness, causes of its dry - up from the factors of physical geography and human activities, this article put forward the engineering and non - engineering control measures for controlling yellow river dry - up : strenghtening the unified management and despatch for its water resource ; resorting to compulsion to save water ; quickening key projects duild for the addition of balance and water storing capacity ; increasing synthetical administer to ecological environment ; increasing effectivesupply of water resource

    黃河斷流形勢日趨嚴峻，斷流的頻率增加、時間延長、里程增大，嚴重製約了黃河流域尤其是黃河下游地區的可持續發展和開發大西部戰略的實施.在分析黃河斷流造成的危害、黃河斷流的自然因素和人為因素的基礎上，提出了加強黃河水資源的統一管理和調度、採取強制措施厲行節約用水、加快骨幹工程建設增加調蓄能力、加大流域生態環境綜合治理的力度、適時開源增加水資源的有效供給等工程性和非工程性措施，以防治黃河的斷流
  5. Tower crane has following characteristics : discontinuous working, starting & braking frequently ; there are noticeable vibration and impulsion in running ; high lifting height and extend rang, heavy lifting moment, etc. with the advent of more and more high - rise and large - scale buildings, requirements for the efficiency, lifting height, lifting moment, and safety features are becoming higher and higher

    塔式起重機具有下述工作特點:斷續工作、頻繁啟動、制動;運行過程中有明顯的振動和沖擊;起升高度和工作幅度較大，起重力矩大。隨著社會中各類高層建築和大型工程的出現，使其對塔機的工作效率、起升高度、起重力矩和安全性等工作性能提出了更高的要求。
  6. From the view point of the whole topologies of current mode hfl inverters, two topologies of half - bridge and push - pull current mode hfl inverters are proposed, which are composed of four power switches. hfl inverters in discontinuous current mode ( dcm ) are extended to those in continuous current mode ( ccm )

    從完善電路拓撲和降低成本的角度出發，本文提出了兩種結構的電流源高頻鏈逆變電路，它們分別是由四個功率管組成的半橋和推挽雙向電流源高頻鏈單級逆變電路，並將工作在電感電流斷續模式的逆變電路擴展到電感電流連續模式。
  7. The algorithm is also applied in the broken rotor bars detection in squirrel cage induction machines, which is dependent on detecting the twice slip frequency modulation due to the speed or torque in the stator current, and the rotor bar faults can be detected effectively without some preprocessing

    指出可以利用信號的小波脊線來提取頻率隨時間連續變換的信號的瞬時頻率，並將該瞬時頻率提取演算法成功地應用到異步電動機定子起動電流信號的分析中，有效地提取出了轉子斷條故障特徵。
  8. Band elimination filter. a filter that has a single continuous attenuation band, with neither the upper nor lower cut - off frequencies being zero or infinite

    帶阻濾波器。只有單個連續衰減帶寬，將在上邊帶或下邊帶頻率切斷為零或無窮大。
  9. This paper carry out power system post - stability analysis with eurostag. this paper determine the state after low frequency oscillation according to the relation between oscillation frequency of low frequency oscillation and eigen value of small signal analysis, which is derived from a great deal of simulation projects. cai xiaoling ( power system and its automation ) directed by prof

    利用eurostag進行電力系統后穩定分析，針對低頻振蕩引起的后穩定問題，通過大量模擬研究了小擾動特徵值分析結果和大擾動振蕩頻率之間的關系，並據此判斷系統發生低頻振蕩失穩后的狀態，為將來進行后穩定后續分析打好基礎。
  10. In large rotating machinery using filmatic bearing ( turbogenerator, air compressor, etc. ) there is a potential trouble from impefect installation or running conditions, a metals " contact between rotors and shells. the trouble is usully called rubbing. the advantage of ae technologe in the rubbing diagnosis and early detection is showed. instead of classical ae characteristic parameters ( counts, amplitude, energy, duration and the other ones ) a new feature extraction by frequency analysis of ae envelop signals is discussed. both research of ae process and field experements indicate that periodic components in the envelop spectrum related to rotational speed increase evidently at the beginning of rubbing production, hence are highly sensitive to the rubbing fault diagnosis. according to the new design an acoustic emission equipment for the rubbing diagnosis named buaa ae testing system is developed and described

    汽輪發電機、空氣壓縮機等採用油膜支撐的大型轉動機械，由於安裝或運行中的原因，在轉子旋轉過程中，可能和器壁發生輕微的摩擦和碰擊，簡稱碰摩.聲發射技術在碰摩發生特別是故障早期診斷上有優越性.本系統的特點是沒有沿用傳統的計數、幅度、能量和持續時間等聲發射特性參數，而是在聲發射包絡信號的頻率分析中進行特徵提取.聲發射發生的過程分析和現場試驗都表明這種方法對碰摩檢測很敏感，在碰摩發生的起始階段，包絡譜中與轉速同步的周期性分量顯著增加.根據這種新的設計思想自行研製了buaa碰摩聲發射檢測儀並對此作了介紹
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