正方偏壓 的英文怎麼說
中文拼音 [zhēngfāngpiānyā]
正方偏壓
英文
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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。Second, the results of theory analysis and simulation research show that the output of one cycle controlled bridge switching power amplifier have dc offset because of the nonideal characteristic of reset signal. the magnitude of output dc offset voltage is proportional to width of reset pulse. a voltage compensation technique is used to solve this question, and the computation formula of compensation voltage is gived. the circuit compensated and not are researched through simulation and experiment, which results show that compensated circuit solve the output dc offset effectively
其次，理論分析和模擬研究結果表明，由於復位脈沖的非理想特性，單周控制的全橋開關功率放大器輸出端存在直流偏置問題，其大小與復位脈沖的寬度成正比。針對輸出直流偏置問題，提出了電壓補償的改進方案，給出了補償電壓的具體計算公式。對補償前和補償后的方案進行了對比模擬研究和實驗研究。Abstract : experimental researches on normal section ultimate fle xural strength of prestressed reverse - rib - slab with excessive steel bar were m ade, and according to chinese norm ( gbj10 - 89 ) and american norm ( aci ) in which s train harmony analysis method was adopted, its ultimate strength was calculated, these make us further realizse the ultimate flexural strength of prestressed r everse - rib - slab with excessive steel bar
文摘:通過疊合結構中預應力超筋倒肋薄板正截面極限承載力的試驗研究，分別採用規范gbj10 - 89中的受彎構件、偏心受壓構件的計算公式及美國aci規范中的應變協調分析方法計算了極限承載力，從而更清楚地認識了配有高強鋼絲的超筋倒肋板的極限承載力計算問題。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。The methods of modificatory lattice cross - section and equivalent circular cfst cross - section for calculating the maximum load of dumbbell cfst columns with eccentric loading were presented in this paper. the ultimate strength of 14 specimens were calculated by the two methods were close to experimental results. finally, the two methods were used to calculate the ultimate strength of arch bridge of zhengzhou yellow river highway
對現有鋼管混凝土啞鈴形構件極限承載力的計算方法進行了分析，在此基礎上，提出了計算鋼管混凝土啞鈴形構件的偏壓極限承載力的修正的格構式截面法和等效截面法，兩種演算法的計算結果與試驗值均吻合較好，最後用這兩種演算法計算了鄭州黃河公路二橋拱肋的極限承載力。Influence of dc - rail zero - voltage notch on the output of the inverter is investigated, and an important conclusion is obtained that the direction of output current of the inverter is not effected by the voltage deviation produced by dc - rail zero - voltage notch, on the basis of which, a new simple correction approach is put forward. experiment results show that the proposed correction method is effective
探索了直流母線零電壓凹槽對逆變器輸出特性的影響，得出了母線零電壓凹槽形成的輸出電壓偏差與逆變器輸出電流方向無關這一重要結論，在此基礎上，提出了一種簡便的校正新方法，通過試驗驗證了該校正方法的有效性。The research results are controlled source which has linear or nonlinear variabe frequency scan function and the seismic instruments which match with it, and the method of small group intervals, small offset, much more channels, short array length, high - frequency receivers are applied during the link of data acquisition, and that the techniques of the refraction static correction, the noise suppressing, the high - resolution velocity analysis, the wavelet length compression, the wavelet zero - phase, and the prestack migration should be applied emphasizedly during the link of data processing and interpretation
研究表明，對于城市活斷層的抗干擾高解析度淺層地震勘探，在數據採集環節應採用具有線性或非線性變頻掃描功能的可控震源和與其相匹配的地震儀器，以及小道間距、小偏移距、多接收道、短排列和高頻檢波器接收的工作方法；在數據處理與解釋環節，要重視折射靜校正技術、噪聲壓制技術、高精度速度分析技術、子波壓縮技術、子波零相位化技術和疊前偏移技術等的應用。However, df pre - processing is not required in a interferometer direction finder. it only makes use of the phase relations or differences of sensors disposed at different position. azimuth and elevation are caculated from the phase differences or displayed directly on a crt drived by the voltage or current from the phase differences
干涉儀測向不必進行測向信號預處理而是直接或間接求取在空間上分開的傳感器上感應電勢之間的相位關系，即干涉相位差，方位角或仰角是直接由干涉相位差計算得到，或將兩基線正交的天線陣的干涉相位差轉化為驅動電壓（電流）分別加到crt陰極顯示器的垂直偏轉線圈和水平偏轉線圈，模擬顯示出來波方位，干涉儀測向為典型的相位測向方法。Full - range of loading to the reinforced concrete columns with reinforced concrete cover during second stage of loading is analyzed by computer - test nonlinear developed in the text, in consideration of the condition that they are not unloaded or partly unloaded. based on the analysis, a simplified method is put forward in the paper to calculate the load capacity of cross - section of axially and eccentrically compressive rc columns with reinforced concrete cover. a theoretical calculation method is given to the practical engineering
本文針對實際工程中經常採用的外包鋼筋混凝土加固鋼筋混凝土柱的加固方法，考慮到實際加固工程是在不卸載或部分卸載情況下進行，利用計算機對外包鋼筋混凝土加固柱二次受力后進行非線性全過程分析，在此基礎上提出外包鋼筋混凝土加固柱軸心受壓和偏心受壓正截面承載力的簡化計算公式，為實際工程中外包鋼筋混凝土加固柱的結構設計提供了理論計算方法。By conducting the degree of influence of slip strain on average strain of a member section, some parameters of corrected even section were accurately calculated, which made the corrected even section more reasonable. and then a calculating model of bearing capacity for eccentric loading columns was proposed by using limit balance equations
通過推導滑移應變對構件截面平均應變的影響，準確確定出修正平截面中的一些參數，使修正平截面更趨合理性，再利用極限平衡方程，建立了src偏壓柱受壓承載力計算模型。However, in july 2002, the subtropical ridge did not extend to southern china and the steering flow over the northwest pacific had a more northerly direction than usual. as a result, the tropical cyclones in the region were carried northwards and did not enter the south china sea (
但今年同期副熱帶高壓脊並沒有西伸至華南，使西北太平洋上引導氣流的方向比正常偏北，在該區的熱帶氣旋因此偏向北移，而不向西進入南海（Practical calculation method of normal cross section bearing capacity of r. c. column with deformed section subjected to biaxial eccentric compression loading
異型截面鋼筋混凝土雙向偏心受壓構件正截面承載力的實用計算方法To research the issues measurement models and analysis methods of power quality, we put forward an analytical opinion in this paper. following fluctuation of power system, which amends parameters deviation in accordance with fundamental component
本文通過對電能質量的指標、測量模型以及各種電能質量分析方法的深入研究，提出了一種實時跟蹤電壓基波分量參數的變化，獲取幅值、頻率、相角的實時數據，修正偏差的分析思路。And the distribution of stock dividend in a high percentage can devalue the future market achievement of the company. other companies developed their policy of dividend distribution purely for the purpose of meeting the developing tendency of the price of the secondary stock market. this greatly twisted the stock price and does even serious harm to the long - term holders who are keen on the stock dividend
武漢理工大學碩士學位論文這種不分紅或過度的以送紅股的方式分配，不利於真正實現股東價值的最大化，而且高比例送股不僅會使原有股東的股權稀釋，也會給企業未來業績造成巨大壓力;或純粹為了配合二級市場走勢而制定分紅政策，使股票價格扭曲，更不利於培養具有股利偏好的長期投資者。分享友人