正向脈沖 的英文怎麼說

中文拼音 [zhēngxiàngmàichōng]
正向脈沖 英文
direct impulse
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 脈 : 脈名詞1. （動脈和靜脈的統稱） arteries and veins2. （脈搏的簡稱） pulse 3. （像血管的組織; 連貫成系統的東西） vein
  • 正向 : [電學] forward direction正向傳導 forward conduction
  1. For electrodeposition by dc methods, the metals deposite uninterrupted and the particles were also embeded uninterrupted into the coatings ; for electrodeposition by pc method, the particles with biggish volume were desorbed from the coatings and returned to the electrolyte again owing to the presence of pulse interval ; for electrodeposition by prc method, the particles carried positive charges are much more easy to desorb from the coatings owing to the effecf of reverse pulse current combined with pulse interval, in addition, the reverse pulse current also could dissovle the metals, further accelerates the desorption of particles, thus the particles size embeded in the coatings by prc method is the least

    直流電沉積時，基質金屬的沉積連續進行，粒子在電極表面不間斷嵌入鍍層;單脈沖電沉積由於脈沖間歇的存在使得具有較大體積的粒子會脫附，重新回到溶液中;採用周期換向脈沖時，反向脈沖電流使表面荷正電的較大的粒子更易從電極表面脫附，同時，反向脈沖電流對基質金屬的溶解作用，也會促進粒子的脫附，因此鍍層中復合粒子尺寸最小。隨著鍍層中粒子復合量的增加，三種鍍層的晶粒都明顯細化，說明al _ 2o _ 3的存在阻止了晶粒的長大，提高了電沉積過程中晶核的形成速率。
  2. Occurred in the neozoic, the strong himalayan movement made the first order and the second order structure units uplift to form maintains in the basin, which are unfav orable to preserve oil and gas

    新生代發生的強烈的喜山運動，促使盆地內部各一、二級正向構造單元進一步沖斷上隆、甚至生長為盆內山脈，對古油氣藏保存不利。
  3. 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。
  4. 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。
  5. The figure of daily mean value in resent year showed : the medium term anomaly with impulse jumps appeared 11 months before the event, and the maximum of anomaly was 84 times of the normal rising rate ; the short term anomaly appeared 4 - 1 month before the event, and the maximum of anomaly was 274 times of normal mean fluctuation ; the imminent anomaly appeared 9 days before the event, and the maximum of anomaly was 2. 5 times of normal mean fluctuation

    年日均值圖顯示，中期異常出現在震前11個月左右，表現為脈沖式向上突跳及階躍式上升，最大異常量為日均正常上升速率的84倍；中短期異常出現在震前4個月和1個月，最大異常量為正常日均波動值的274倍；臨震異常出現在震前的第9天，震前25小時達到最高值，最大異常量為正常日均波動值的2 . 5倍。
  6. The thyristor can be trigged into the on - state by applying a pulse of positive gate current for a short duration provided that the device is in its forward blocking state

    如果是處于正向阻斷狀態，只要在門極提供一個短暫的正脈沖，晶閘管就會導通。
  7. It is found from the experiment that under the conditions of peak magnetic field of 0. 57t, beam pulse fwhm ( full width of half maximum ) of 44ns, a microwave radiation pulse with fwhm 25ns and whole width of 35ns is produced, when the intensity of the guiding magnetic field rises, the peak microwave power changes little but the width of the pulse reduces. the a - k gap also has obvious influence on the microwave radiation, the stable and higher microwave output is obtained under suitable gap

    實驗中還發現，在峰值磁場0 . 57t和束流半高寬44ns情況下，得到了25ns半高寬和35ns底寬的微波脈沖信號，隨著導引磁場增加，微波信號幅值基本不變，但國防科學技術大學研究生院學位論文是微波脈沖寬度會逐步減少;實驗中還發現磁場線圈位置有一定的軸向調節范圍，說明在磁場軸向分佈的一定變化范圍內，器件都可以正常工作，這對以後的永磁場系統導引的微波實驗有利。
  8. Nonlinear directional coupler ( nldc ) is a switch used in optical network. w. s. man had studied transmission controlling with ground state soliton through nldc, it is obviously not available to used in superhigh speed network ; and mary j. potasek had studied the self - coupling with ultrashort solitons in nldc, self - coupling is difficult to control the signal transmitting. i has studied the transmission controlling with ultrashort solitons ( < 100fs ) in nldc, similarly i use a controlling pulse to control the signal pulse, it is the intensity of controlling pulse to decide the signal change its direction or not

    非線性定向耦合器（ nldc ）是用在光網路中的光開關器件，它主要用在全光網路中， w . s . man等研究過基態孤子在nldc中的傳輸控制，便於對全光網路中數據的正確傳輸，由於目前研究集中在100fs的超短脈沖傳輸特性上，顯然基態孤子的特點不再適用於超高速網路； maryj . potasek等就超短脈沖在nldc中的自耦合做了研究，在光網路中自耦合任意性太大，不利於控制脈沖的傳輸。
  9. In its digital processing circuit, clock chip with high precision and temperature compensation is uesd as reference clock. high frequency reversible counter is used to count trimmed impulse signal forward or backward and two pathes saw signals are selected timely by multichannel selector

    數字信號處理電路採用高精度、具有溫度補償的時鐘晶元作為基準時鐘，採用高頻可逆計數器對整形后的脈沖信號進行正向或逆向計數，採用高性能的多路選擇器控制兩路saw信號的定時選擇。
  10. When pulse width is long enough to above 2. 5ms, the corrected direction of laser hammering is away from the laser head, which may be the reason for weld bath being fatal destroyed

    當脈沖寬度超過2 . 5ms時，由於熔池發生了復雜的變化，有可能使激光錘校正方向相反從而難以預測。
  11. The main original work includes : 1. the interaction between an integral pile and a uniform visco - elastic soil layer with viscous damping or hysteretic damping is theoretically studied, and the pile response to a harmonic load is obtained in a closed form and used to define complex stiffness at the pile head. semi - analytical solution of the velocity response in time domain subjected to a semi - sine wave exciting force is also given

    主要工作包括： 1 、在考慮樁周土三維波動條件下，對滯回阻尼、粘性阻尼單層均質土中樁土縱向耦合振動問題進行了解析研究，分別得到樁頂位移、速度頻域響應以及復剛度的嚴格解析表達，以及半正弦脈沖激振力作用下樁頂時域響應半解析解。
  12. Increasing the reaction time, zirconium phosphate becomes the main crystalline of the coating. the coating surface is coarse, loose and two many cracks and micro - holes exist in the section image of the coatings. the ceramic coatings

    正向脈沖作用增加，有助於膜層內- al _ 2o _ 3含量增多、膜層增厚，但是膜層由於生長過快而較粗糙、多孔。
  13. They pointed out that modulation wave fronts ( such as those in the front of a light pulse ) in a negative index material are aligned the same way as they are in a positive index material ? anything else would violate basic causality and require parts of the wave to travel with infinite velocity

    他們指出在負折射率材料中調制波前（例如光脈沖前端的波前）的方向，與在正折射率材料中相同；若非如此，就會違反基本因果律，且部份波的前進速度將成為無限大。
  14. Based on the foundation of vector error correction model, this paper applies impulse response function and variance decomposition to portray the dynamic correlations between development of infrastructure and economic growth in chinese rural areas

    摘要本文以建立向量誤差修正模型為基礎，使用脈沖響應函數和預測方差分解來描述中國農業基礎設施發展與農村經濟增長之間的動態相關性。
  15. It shows that there is cointegration relationship between the economic growth rate and the m1 increase rate. then by using the cointegration, granger causality method, impulse - response analysis, vector error correction model with markov regime switching to test the equilibrium relationship in long run and the short fluctuation pattern in short run between the real output and m1 increase rate, it shows that monetary supply can affect the macroeconomic effectively, and the interest rate and stock market value can not affect the macroeconomic effectively

    本文研究了經濟增長與貨幣供給量、利率、股票市場等貨幣中介指標的關系，得出經濟增長率與m1增長率具有協整關系的結論，在此基礎上使用協整分析、 granger因果關系檢驗、脈沖響應分析、具有markov區制轉移的向量誤差修正模型等最新的經濟計量方法，描述和檢驗了中國經濟周期波動過程中實際產出與貨幣供應量變動的長期均衡關系和短期波動模式。
  16. At last, an orthogonal test designing method is proposed to study the influences of various fcg and power conditioning circuit parameters on the system performance, to find out those most influential factors and to make them optimized

    最後文中提出應用了正交試驗設計方法對影響fcg和脈沖功率調制電路性能的參數進行研究，以此來確定影響系統運行的主要因素和優化參數的努力方向。
  17. Passed the large quantity to deduce, establish the concrete project that realizes two - dimensional trajectory correction with damping ring and horizontal pulse

    通過大量的計算分析，建立了利用阻力環和橫向脈沖實現彈道二維修正的具體方案。
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