超前波 的英文怎麼說

中文拼音 [chāoqiánbō]
超前波 英文
advance wave
  • 超 : Ⅰ動詞1 （越過; 高出） exceed; surpass; overtake 2 （在某個范圍以外; 不受限制） transcend; go beyo...
  • 前 : Ⅰ名詞1 （在正面的） front 2 （次序在先的） first; top 3 （過去的; 較早的） ago; before; preceding...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  1. Superficially it is quite safe to phase advance an accelerometer signal as the error signal has been filtered by the servo and the alrframe transfer function.

    從表面上看，因為誤差信號已被伺服機構和彈體傳遞函數濾波，所以讓加速度計信號經相位超前網路是不會有問題的。
  2. The iatrical ultrasonic is about 1 - 15mhz at present, which generated by piezoelectricity crystal at the function of alternant electric field

    目前，醫用超聲波的范圍多在1 15mhz ，是由壓電晶體在交變電場作用下發生機械振動而產生。
  3. " bor " the series product, uses now the international leading technology, american, german, the japanese import name brand electron primary device, the raw material production manufacture, at present has several series, 100 many kinds of specifications, the variety complete standardization series product, as well as the large - scale non - sign using plc, touches the screen and the labor controls the completely automatic ultrasonic wave clearer, the ultrasonic wave plastic welding apparatus which the computer control screen demonstrated, industry cold water machine, the commercially pure hydraulic engine and so on the non - sign equipment

    「博爾」系列產品，採用當今國際領先技術，美國德國日本進口名牌電子元器件原材料生產製造，目前有十幾個系列一百多種規格品種全的標準化系列產品，以及大型非標運用plc觸摸屏及工控電腦控制屏幕顯示的全自動超聲波清洗機超聲波塑料焊接機工業冷水機工業純水機等非標設備。
  4. The visx star star 4 combines the technologies of customvue wavescan aberrometer, activetrak 3 - d active eye tracking, iris registration, variable spot scanning and variable repetition rate to provide customized wavefront treatment. in the past, standard lasik corrects refractive errors, such as myopia, hyperopia and astigmatism which are so - called low order aberrations

    威視visx star 4是結合前波前像差分析儀3d眼球主動追蹤系統虹膜定位系統ir iris registration及智慧型超微光斑等技術去提供個人化激光矯視療程。在過去，標準lasik可解決近視遠視及散光等所謂低階像差問題。
  5. Being a sort of new principle micromotor in the fronitier of science. the ultrosonic motor ( usm ) is developed at recently twenty years. utilizing the stator surface particle elliptical motion excited by piezoceeramics, the usm is drived by friction force between the stator and rotor. compared with the conventional electromagnetic motor, the ultrasonic motor has the following features : high speed, high holding torque when power is off and so on. because of it ' s characteristics, the ultrasonic motor has obtained some widespread application in robots, precise instrument, house electronical appliance, sapceecraft automobile and micromechanism

    超聲波電機（ ultrasonicmotor ）是近二十年來發展起來的一種新原理電機，其原理不同於傳統的電磁型電機，它是利用壓電陶瓷的逆壓電效應使定子的表面質點產生橢圓運動，通過定子和轉子之間的摩擦力驅動轉子運動。這種新型的電機與傳統電磁電機相比，具有響應快、不受電磁干擾、結構緊湊、低速、大扭矩、斷電自鎖等優點，因而在微型機械、機器人、精密儀器、家用電器、航天器、汽車等方面顯示出廣泛的應用前景。
  6. The density of mucopolysaccharide increased upon complete sonication more for the treated rats than for the controls, and this was closely related with the improvement in histopatho - logical findings, but inversely with the changes in arthritic severity

    在治療組中黏多醣類的密度在超音波治療前後及和控制組比較均有明顯的上升，而且於超音波治療結束時之黏多醣類密度與組織病理學上的修護有密切相關；同時黏多醣類密度的變化與嚴重度指標的改變成負相關。
  7. Preoperative sonogram and ct scan were performed

    手術前進行超音波，電腦斷層攝影的評估。
  8. Observe on ultrashort wave therapy on bladder spastic pain in post - prostatectomy patients

    超短波治療前列腺術后疼痛的效果觀察
  9. By using the three - dimension acoustic doppler velocimeter to measure velocities of flow in an ecological river before and after arrangement of cropping loops, the velocity distribution, turbulence intensity and reynolds stress before and after arrangement of cropping loops are compared

    摘要採用三維超聲波多普勒測速儀對河道生態修復中種植圈布設前後的工況量測，比較了布設種植圈前後的流速分佈、紊動強度和雷諾應力的變化。
  10. Chemotherapy use chemical drugs to treat tumor, it also bring harm to person ' s body. it is a new hotspot that using ultrasonic to treat tumor in the world recently. focusing ultrasonic on tumor, we can kill the malignant cells using the heat generated by ultrasonic without serious side effect like actinotheraphy or chemotherapy, so, it is new method with great hope

    將超聲波用於腫瘤治療是近年來各國研究的熱點，通過將超聲波聚焦到腫瘤組織上，利用其熱效應殺死腫瘤細胞，不會給患者帶來生理痛苦，也不會像放療和化療那樣產生嚴重的副作用，因此是一種很有發展前途的新方法。
  11. The company mainly produces carving machines, desktop brushless silicon carbide carving machines, automatic stone cutting machines, ultrasonic carving drilling machines, ultrasonic cleaning machines and faceting machines

    目前產品有寶石雕刻機、臺式無碳刷雕刻機、自動切石機、超聲波雕刻多打孔機、超聲波清洗機、角度機等。
  12. 1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %

    從功率單向流動角度出發，提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲，在調制系數0 . 1 m 0 . 5情況下，控制移相角按正弦規律變化，使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號，經過整流、濾波、低頻逆變，從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載，移相全橋具有超前橋臂零電壓開通，滯后橋臂或者零電壓開通（ _ 0 ）或者零電流關斷（ _ 0 ）的軟開關特性，而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。
  13. 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。
  14. 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。
  15. Zero - voltage turn - on and zero - voltage turn - off in lagging arm and leading arm of soft - switching topology, working waveform of power transformer and process of rectifier and transition are presented in detail. the influence of resonant inductance of the power transformer, resonant capacitor and variation of load to the process of soft - switching are given

    主要對軟開關滯后橋臂和超前橋臂的零電壓開通、關斷過程，功率變壓器的工作波形及整流換流過程進行了詳細的模擬分析，並重點討論了逆變器的諧振電感、諧振電容以及負載變化對軟開關過程的影響。
  16. According to these accomplishments, several techniques are expounded emphatically in this paper, including 3d refraction statics, coherent noise suppression by prestack wave field separating ( prestack fx noise attenuation ), 3d prestack multiple domain random noise attenuation, multiples attenuation, nmo of unsymmetrical hyperbola, dynamic replacement of wave equation, surface - inconsistent residual static, super bin stacking, poststack depth migration and prestack depth migration. all the techniques have been applied in seismic processing of 2d, 3d and wide - line profiling and obtained good results

    本文根據項目組研究成果，重點閘述了三維折射波靜校正技術，疊前波場分離相干噪音壓制方法（疊前fx去噪） ，疊前三維多域隨機噪音衰減技術，多次波衰減技術，非對稱雙曲線動校正技術，波動方程動態替換技術，非地表一致性的剩餘時差靜校正技術，超面元迭加處理技術，疊后深度偏移處理，疊前深度偏移處理等。
  17. Men who have a negative dre and elevated psa, and all of those who have a suspicious dre regardless of psa results, should undergo further diagnostic work - up, such as transrectal ultrasonography with biopsy of visible lesions

    男性若出現指診陰性而前列腺特定抗原升高者，或指診有懷疑異常者，不論其前列腺特定抗原是否增高，皆應進一步從事經直腸超音波檢查並對可看到之病灶進行切片。
  18. This paper mainly studied a piezoelectric ultrasonic motor of rotary type, and an ultrasonic motor with multiple reeds was bettered. the following is the basic content

    本文主要研究了壓電旋轉型行波超聲波馬達，同時也對以前的多振動片式駐波超聲波馬達進行了改進。
  19. Optical nondestructive testing as a kind of the nondestructive testing techniques is introduced and compared with the traditional nondestructive testing techniques like rt, ut and et, et al. its applied merits generalized illustrate that the shortages of nondestructive testing techniques can be covered by the optical techniques to a great degree, which indicates that the optical nondestructive testing has great advantages and application prospects in industrial testing area

    介紹了一種新型無損探傷技術? ?光學無損探傷的應用，將其與傳統無損探傷技術（如射線探傷、超聲波探傷、渦流探傷等）進行比較，對其優點進行了總結，說明光學無損探傷可以在很大程度上彌補傳統技術中的不足，揭示了其在工業檢測領域的巨大優勢和廣闊前景。
  20. An upper arm artery ' s ability to relax and expand to accommodate increased blood flow - - known as flow mediated dilation （ fmd ） - - was measured using high - frequency ultrasound before and after daily cocoa or placebo consumption

    在每日攝食可可或安慰劑前後， （研究人員）利用高頻超音波，對肱動脈因應增加之血流的舒張能力；亦即流量介導擴張（ fmd ）進行測量。
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