magnetic period 中文意思是什麼

magnetic period 解釋
磁變周期
  • magnetic : adj. 1. 磁（性）的；（可）磁化的。2. 吸引人心的；有魅力的。3. 催眠術的。
  • period : n 1 時代；期；時期；期間；階段。2 〈the period〉現代，當代。3 周期；【地質學；地理學】紀。4 終結...
  1. The second, at the high frequency primary coil, when switch turn on with control signal ( the spwm pulse is modulated ), in the positive or negative semi - period of low frequency modulation signal, transformer coil with same direction voltage. the magnetic flux of transformer core will increase step by step. at the end, it leads to magnetic flux saturation

    二、在高頻變壓器原邊，當開關管接收控制信號脈沖列（經調制的spwm波列）導通時，在低頻調制信號的正半周或負半周內，施加在變壓器繞組上的是同一方向的電壓，變壓器磁芯中的磁通可能將級進地逐漸增加，導致磁芯飽和，造成磁偏或單向磁化，導致低頻電信號放大失真或由於很大的磁化電流而無法正常工作。
  2. A detailed statement is made of the feo - the most important material for making feo magnetic material - its developing period, preparation and utilization and the feo problems existing in the metallurgical indus - try in china, a deep research is carried on a series of problems such as the adjustment of panzhihua iron and steel ( group ) cmpany industrial structure, the iron and steel industrial saturation, developing the non - steel industry, how to make use of the second resource of the large amount of feq scale, building the magnetic material industry to fill in the gaps in the field of magnetic material in panzhihua iron and steel ( group ) cmpany

    論文首先闡述了磁性材料在國內外的發展動態及其在電子工業中應用的重要性，對鐵氧體磁性材料最重要的原料?氧化鐵的發展階段、制備方法、利用狀況以及中國冶金行業氧化鐵存在的問題進行了較詳盡的闡述，特別圍繞攀鋼產業結構調整、鋼鐵產業飽和、發展非鋼產業、如何利用大量氧化鐵鱗等二次資源，開發建設磁性材料產業，填補攀鋼磁性材料空白等一系列問題進行深入研究。
  3. 23 june 1940 : enters floating dry dock no. v - vi for a three week period where the three propellers and the mes magnetic system are installed

    1940年6月23日：進入第5和6號干船塢三周，安裝三個螺旋槳推進器和磁性機械繫統。
  4. By analogy, a neutron star born rotating as fast as or faster than the convective period of 10 milliseconds could develop a widespread, ultrastrong magnetic field

    以此類推，在中子星誕生的時候，要是它的自轉速率和10毫秒的對流周期一樣快，甚至更快，就能發展出大區域的超強磁場。
  5. With the most advanced equipments of production processing and inspection, ngyc has the capacity of manufacturing 250 tons of smco permanent magnetic materials annually. we ensure that we will provide top quality smco permanent magnetic materials and elements within the shortest period

    寧港永磁ngyc具有年生產250噸釤鈷永磁材料的先進生產加工檢測設備設施，保證以最快的交期提供優質的釤鈷永磁材料及元器件。
  6. But after a period of time they reorient the dances to the earth's magnetic field.

    但過了一段時間之後，它們的飛舞重新取向于地磁場。
  7. Due to the long - term treatment for diabetes, along with its liability to many factors of diseases, you should not stop taking the measures to reduce or control the blood sugar for it requires a long process to take effect on diabetes. if the effect of control over blood sugar has not been gained, the blood sugar will possibly reincrease after you stop taking medicine. during the period when you use the magnetic bedclothing, you should recheck the blood sugar and glucose in urine regularly

    由於糖尿病是一種長期治療的疾病，而且這種病受多種因素的影響，在使用磁性寢具時，不要停服降糖及控制血糖的其它措施，因為磁場對糖尿病發生效果，需要一個過程，需要一定的磁場作用時間，如果在尚未達到有效控制血糖時，如停服降糖藥物，有可能會使血糖升高，在使用磁性寢具過程中，應定期復查血糖及尿糖，並在醫生指導下，視其變化情況，考慮是否減少降糖藥量。
  8. After a long time evolution, the system finally reaches a stable state at which the magnetization and the equal time spin - pair correlation are periodic oscillating functions with the equal period as the external field. numerical simulation shows : when the amplitude of external filed is large, there exits a particular temperature at which the average magnetization and the average spin - pair correlation are almost unaltered with various field amplitude ( i. e. magnetic susceptibility is zero ), and the particular temperature depends on the number of the spin states, cutting down with q increasing

    由數值模擬得到：當外場幅度較大時，存在一個特殊的溫度點（我們稱之t ） ，在這個溫度點，系統的平均磁化強度和平均等時自旋對關聯隨外場幅度的變化幾乎保持不變（即磁化率為零） ，並且這個溫度的大小依賴于自旋態數目q的變化， q越大，這個溫度就越小；而當外場較小時，確信系統存在有限大小的臨界溫度
  9. For the evolution stars with age less than 109 years, stellar magnetic activity and rotational period decrease with stellar age ; for the stars with age larger

    而晚型演化恆星不論是演化恆星的磁活動還是自轉周期以恆星年齡10 」年為分界點表現出隨年齡不同的規律。
  10. There have good linear relativity between stellar magnetic activity, rotational period and stellar age of ms stars, but this relativity of evolution stars has different action

    在第七章中，我們討論了晚型恆星的自轉周期的分佈、恆星年齡對晚型恆星磁活動的影響以及晚型恆星的角動量演化。
  11. In the design of real - time control system, the paper takes three - phase full - bridge mosfet inverter as the real - time control main circuit, and adopts a control scheme with 120 ? switching mode combined with half - bridge pulse width modulation ( pwm ), which would avoid straightthrough short of a certain bridge. phase current is detected by single current sensor ; three - phase position signals generated by position sensors could not only supply commutation information for inverter, but also be used for speed detecting based on signals " period measurement, which makes the speed sensor unnecessary. the whole control system adopts speed and current dual closed - loop control strategy in order to construct a high performance rare - earth permanent magnetic brushless dc motor ( repm bldcm ) full - digital real - time control system

    在實時控制系統的設計中，本文以三相全橋mosfet逆變電路作為實時控制主電路，採用120導通方式結合半橋pwm調制的控制方案，從而有效地避免了橋臂的直通短路；本文用單電流傳感器實現對相電流的檢測，來自位置傳感器的三相位置信號不僅為逆變電路提供換相信息，而且也用於基於信號周期測量的轉速檢測，這樣就省去了速度傳感器；系統採用的是速度、電流雙閉環控制策略，力求構建高性能的稀土永磁無刷直流電動機全數字實時控制系統。
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