emf 中文意思是什麼

emf 解釋
紅細炮成熟因子
  1. A ti in an online mind - control forum recommends a web site called “ block emf ” ( as in electromagnetic frequencies ), which advertises a full line of clothing, including aluminum - lined boxer shorts described as a “ sheer, comfortable undergarment you can wear over your regular one to shield yourself from power lines and computer electric fields, and microwave, radar, and tv radiation. ” similarly, a tinfoil hat disguised as a regular baseball cap is “ smart and subtle

    一位受害者在網上的一個大腦控制（精神控制）論壇上推薦了一個網站「阻止電動勢」 （電磁波頻率） ，建議一系列的衣服，包括鋁內襯短褲，如此介紹「的確，你可以穿著舒適的內衣，屏蔽普通電纜和計算機電場、微波、雷達、電視輻射」 ，同樣，一個內藏錫帽的普通棒球帽也是「高明的和精巧的」 。
  2. Ti in an online mind - control forum recommends a web site called “ block emf ” ( as in electromagnetic frequencies ), which advertises a full line of clothing, including aluminum - lined boxer shorts described as a “ sheer, comfortable undergarment you can wear over your regular one to shield yourself from power lines and computer electric fields, and microwave, radar, and tv radiation. ” similarly, a tinfoil hat disguised as a regular baseball cap is “ smart and subtle

    一位受害者在網上的一個大腦控制（精神控制）論壇上推薦了一個網站「阻止電動勢」 （電磁波頻率） ，建議一系列的衣服，包括鋁內襯短褲，如此介紹「的確，你可以穿著舒適的內衣，屏蔽普通電纜和計算機電場、微波、雷達、電視輻射」 ，同樣，一個內藏錫帽的普通棒球帽也是「高明的和精巧的」 。
  3. Standard test method for thermal emf test of single thermoelement materials by comparison with a reference thermoelement of similar emf - temperature properties

    與有相同電動勢溫度性能的標準熱電偶相比較測定單個熱電偶材料的熱電動勢的標準試驗方法
  4. Using the emf - based code generation allows for a very straight - forward creation of an api that supports both wsdl marshalling and unmarshalling and underlying model manipulation

    Emf產生的代碼使得可以直接生成api ，用來支持wsdl文件的編組和解組，以及底層的模型管理。
  5. So the related mechanism studies of the cellular signal transduction have advantages for investigating biological effects of ele - emf

    對極低頻電磁場信號轉導過程的研究，有利於揭示其生物效應的機制。
  6. The mechanical platform of unregulated voltages, power and back - emf spikes, and the electronic platform of clean power and 5 - volt signals

    非調節電壓、電力和反電動勢峰的機械平臺以及干凈電源和5伏信號的電子平臺。
  7. Secondly, the effects of the crest width of the back - emf waveform to the torque ripple in the 120 ? conduction mode are analyzed, among which the effects of the advance commutation angle to the torque ripple are quantificationally analyzed for the bldcm drives whose back - emf waveform crest width is less than 120 ?,

    其次分析了120導通方式下反電動勢平頂寬度對轉矩脈動的影響，對于平頂寬度小於120電角的非理想梯形波反電動勢，定量分析了換相超前角對換相轉矩脈動的影響。
  8. For the bldcm which has a pseudo - sinusoidal back - emf waveform, this dissertation presents a svpwm control method using six discrete position signals for minimizing the torque ripple. the main aspects for the implementation of this method are analyzed, including the initial orientation of the voltage vector, reasonable choice of the impedance angle and the advance commutation angle, and estimation of the successive rotor positions

    針對反電動勢類似正弦的準正弦波反電動勢無刷直流電動機，本文提出一種基於六個離散位置信號的自同步svpwm （電壓空間矢量法）控制方法，用以削弱電磁轉矩脈動，分析了實現這種方法的主要控制環節，包括起動時電壓空間矢量的初始定位，阻抗角與電流超前角的合理選擇以及連續轉子位置的估計等。
  9. The simulation results prove that this control technique can effectively minimize the torque ripple for the bldcm drives whose back - emf waveform crest width is less than 120

    模擬結果表明這種控制策略能有效地抑制反電動勢平頂寬度小於120電角的無刷直流電動機的換相轉矩脈動。
  10. Furthermore, this dissertation also gives a comprehensive analysis and comparison to the torque ripple factor, torque - current ratio and other aspects for pseudo - sinusoidal emf bldcm drived by 120 conduction mode, 180 conduction mode and self - synchronous svpwm mode respectively. the simulation and the experimental results indicate that self - synchronous svpwm method is more effective for minimizing the torque ripple without any expense of the torque - current ratio when the crest width of the back - emf waveform is less than 107 electrical angles

    對準正弦波反電動勢無刷直流電動機在120導通方式、 180導通方式和自同步svpwm三種控制方式下的轉矩脈動系數、轉矩電流比等方面進行了全面的分析與比較，模擬研究和實驗結果表明，當反電動勢的平頂寬度小於107電角時，採用自同步svpwm控制方法可以在不損失轉矩電流比的基礎上，更有效地抑制電磁轉矩脈動。
  11. For the bldcm which has a general crest width of the back - emf waveform, two kinds of torque ripple conditions when drived by sine - wave current as well as by square - wave current are deduced based on the mathematical models. in addition, a comparison is carried out between these two conditions, which indicates that sinusoidal current driving is more favorable to minimizing the torque ripple when the crest width of the back - emf waveform is less than a certain value

    闡述了抑制齒槽轉矩措施對反電動勢波形的影響，利用無刷直流電機的數學模型推導並比較了任意平頂寬度梯形波反電動勢在正弦波和矩形波兩種電流驅動下的電磁轉矩脈動情況，得出在梯形波平頂寬度減小到一定數值后採用正弦電流驅動更有利於減小電磁轉矩脈動。
  12. With the development of the converter drive technology, the requirement for the variable frequency drive are becoming more and more strict especially for the modern converter drive employing fast switching semiconductor igbt ， though it has high pulse frequency and refreshing time of only nanoseconds, it generates emf that has adverse effect on the environment

    隨著頻率控制傳動技術的發展，對頻率變速傳動系統的要求越來越高，尤其是對採用快速切換的igbt半導體現代變頻技術，盡管脈沖頻率高或更斷時間僅毫微秒內，但它們會對周圍環境產生電磁場。
  13. Although the induced emf is not altered, the currents and their heating effects are minimized.

    雖然感生電動勢沒有改變，但卻把渦電流及其熱效應減到最小。
  14. The test method of thermo - emf for platinum rhodium thermocouple thin wires

    鉑銠熱電偶細絲的熱電動勢測量方法
  15. In order to find an explanation and to determine the possible mechanism of these biological effects, many in vitro and in vivo studies of emf effects have been published. these studies were involved in many enzymes ( such as odc, succinate dehydrogenase, pkc ), pro - oncogene ( c - myc, c - fos, etc. ), gap junction and protein synthesis, and so on

    為了揭示工頻磁場生物效應的機制，尤其是與腫瘤發生發展的關系，人們開展了較為廣泛的體內及體外的實驗研究，涉及到各種生物酶類（ odc 、琥珀酸脫氫酶、 pkc等） 、原癌基因（ c - myc 、 c - fos等） 、細胞間縫隙連接及蛋白合成等方面。
  16. Calculation of no - load emf waveform for powerformer

    能量變換器空載電勢波形的計算
  17. The two key parameters, back electromotive force ( emf ) and reactance of d q axial armature reaction are investigated, too. in the process of asynchronous starting, mathematics model of repmsm is established with 1, 2, 0 complex number coordinate system. combined with the model, electromagnetic torque is studied

    論文還研究稀土永磁同步電動機的異步起動過程，建立了稀土永磁同步電動機起動時的數學模型，並對電磁轉矩的性質進行了研究，論文還提出了起動時電磁轉矩的計算方法，論文對稀土永磁同步電動機的牽入同步過程進行了原理性分析，論文也對電機參數對于電機起動性能影響進行了研究。
  18. Based on intelligent power module ( ipm ) and digital signal processor ( dsp ), this system used hack - emf ( electromotive force ) method to implement the sensorless control for brushless dc motor of air conditioner ( ac ) in fcv

    該系統基於智能功率模塊（ ipm ）和數字信號處理器（ dsp ） ，採用反電勢法實現了電動汽車空調用無刷直流電動機的無傳感器控制。
  19. Second, as currently study of hot point, back ? emf, it will discuss the principle of the sub - position examination in detail. based on the principle, it put forward a kind of improving back - emf method of crossing - zero checking turns position. but this did n ' t resolve to the root problem that the speed scope is very narrow and it need an in expiation of speed error and so on. thus it put forward a new improvement method at next chapter

    其次，就目前所研究的熱點? ?反電勢法，詳細討論了其轉子位置檢測的原理，在此基礎上提出了一種改進的反電勢過零點檢測方法，其可直接從電機端部得出反電勢對地的電壓值，而不是通過電機中心點電壓來得到反電勢。
  20. Electronic voltage reference standards submitted for calibration should have a nominal voltage of 1 v, 1. 018 v or 10 v. additional uncertainty will be added for other values of emf

    呈交作校正的電子電壓標準器具，其標稱電壓應為1v ， 1 . 018v或10v 。否則，其牽涉的測量不確定度將會增大。
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