頻率交聯 的英文怎麼說
中文拼音 [bīnlǜjiāolián]
頻率交聯
英文
cross banding-
Therefore, during system design, cascade coding combining reed - solomon codes and convolutional codes is utilized ; in addition, time - direction and frequency - direction interleaves are added to alleviate channel fading
因此在進行系統設計時，採用了rs碼與卷積碼的級聯編碼方案，並同時加入時間交織和頻率交織來對抗通道衰落。Third, other nuclear quanlities ( such as fission caused by slow neutron, odd - even difference of frequency of bandcrossing etc ) were researched briefly, no other than pairing correlation, their results represented a series of odd - even differences
（ 3 ）對原子核的其它性質（如慢中子引起的裂變，帶交叉頻率的奇偶差等）的奇偶差也作了簡要的研究，正是由於對關聯的存在，其他性質也表現出一系列的奇偶差。In this paper, the research progress of ac losses of high temperature superconductors and the existing problems on ac losses investigation are introduced ; the characteristics of the critical current and ac losses of hts tapes, stacked tapes and hts coil, such as electro - magnetic characteristics, the anisotropy, the mechanics characteristics and the effects of insular layer between stacked tapes and the influence of frequency of ac transport current etc, are investigated
本文在系統介紹高溫超導體的交流損耗及其研究現狀與存在問題的基礎上，從理論和實驗兩方面，研究了bi系高溫超導單根帶材、多根超導並聯組合帶材、及超導線圈的臨界電流與交流損耗的特性：重點研究了交流損耗與臨界電流的電磁特性、機械特性、各向異性特性、及帶間絕緣層與傳輸電流頻率對交流損耗的影響等。Abstract : this paper pointed out a few problems of series, harmonic and efficiency etc., to be needed considering, it introduced constructed by all - controlling power electronics device igbt by means of multi - pwm control technology, and this kind of convertor can be the used for direct frequency conversion governorof midolle / high - voltagea. c mo tors
摘要：提出用於高壓電動機變頻調速電源需考慮的串聯、諧波和效率等幾個問題;介紹由全控型電力電子器件igbt按多重化pwm控制技術構成、目前已商品化的高壓變頻器，可用於中、高壓交流電動機的直接變頻調速。Our findings show that ， except contact frequency with parents and other relatives ， there is no evidential support for other elements in the cost model that influences social interaction
結果表明，除了與父母和其他親屬的聯系頻率以外，影響社會交往的成本因素在北京社會網路的9種角色關系中沒有獲得經驗資料的支持。Accounting earnings is the key index in all accounting information, which not only reflects the past outstanding achievement, but also forecasts the growing prospect of listed companies combined with other indexes. after the publication of annual financial reporting of listed companies, investors usually evaluate the achievement of different companies by accounting earnings index when they select objects in numerous listed companies. in securities market, legislation and administration institutions value and supervise the whole course from coming into the market to exiting from the stock market by earnings index. recognition of the stock listed company, the confirmation of issuing price, absorbing new capital from market, st and pt, which have osculation connections with earnings index
另一方面，在實踐中，會計盈餘指標業是應用頻率非常高的財務要素，證券分析師和投資者大多會採用這一指標來評價不同公司間的業績，並預測其未來的發展前景。而在證券市場的監管上，立法、行政機構也是廣泛使用會計盈餘指標對公司從招股上市到摘牌下市的全過程進行評價和監督，其中股份上市公司的認定、上市發行價格的確定、上市公司的再融資、股票交易的特別處理、暫停上市和摘牌等都與盈餘指標有密切的聯系。The interleaving two - transistor forward converter succeeds to the advantages of the two - transistor forward converter, it has two units working alternately, the power loss of the converter is distributed and the output voltage ripple frequency is twice of the switching frequency
交錯並聯結構式的雙管正激變換器，繼承了雙管正激變換器的優點，兩個並聯單元互補工作，分擔了功率損耗，等效占空比擴大了一倍，輸出電壓的脈動頻率變為功率管開關頻率的兩倍。The results show that wavelength locates in gain zone of semiconductor optical amplifier, and have higher peak power and proper time delay between the two pulses for the second order super gauss control pulse in semiconductor optical amplifier. a high quality amplified signal pulse can be achieved. the chirp can be reduced notability by using cascading soa in cross gain modulation based on soa, and the distance and the peak power of conversion optical pulse can be increased notability, and we can let down the demand for wavelength based on xgm in soa and enhance the flexibility of wavelength conversion
我們應用二階超高斯光脈沖與高斯信號脈沖同時注入soa和應用soa與非線性光學環鏡（ nolm ）相結合的方案來對信號脈沖進行壓縮整形，模擬顯示，在調節系統合適參數的情況下，波長位於soa增益區的二階超高斯控制光脈沖在具有較高的峰值功率和適當時延下輸入soa時，最後可以得到放大的高質量超簡訊號光脈沖；在基於soa的交叉增益調制（ xgm ）全光波長轉換中，採用級聯的soa能有效地使反轉光脈沖的頻率啁啾得到有效降低，波長向下轉換的距離和反轉光的峰值能量都得到明顯提高，降低了利用交叉增益調制（ xgm ）波長轉換中對波長精度的要求，從而提高了波長轉換的靈和性。Full - sealed assembling capacitor is applied to ac power system 50 60hz with rated voltage of 6kv 10kv 35kv for improving power factor and quality of power grid, reducing transmission loss and raising the efficiency of power transmission transformation facilities
全密封集合式並聯電容器，主要用於工頻50hz或60hz ，額定電壓6kv 10kv及35kv的交流電力系統中用來提高功率因數改善電網質量降低線路損耗，充分發揮輸變電設備效能。The following important work has been done : ( 1 ) some special problems of rate - bias laser gyro were analysed. the problems include modulation and demodulation of the output and algorithm of the attitude updates ; ( 2 ) the integrated navigation system with the fault tolerance property which equipped with many navigation equipments as sins, gps, dvs, ads, mg, vg is designed, and compared with that of ckf via simulations ; ( 3 ) the theories and methods of system level fault detection apply to federated filtering is investigated ; ( 4 ) the problem about using the fused information of sins based on rate - bias laser gyroscope / dynamical tune gyroscope to realize the component level hard fault interactions detection through a back - propagation neural network is discussed
主要研究工作有：研究了速率偏頻激光捷聯慣導的陀螺測量信號的解調演算法；設計了在速率偏頻激光捷聯慣導、 gps 、多普勒雷達、大氣數據系統、磁航向儀及垂直陀螺配備條件下聯邦濾波組合導航系統，對聯邦濾波器和集中濾波器的性能做了模擬對比分析；研究了適用於聯邦濾波器的系統級故障理論和方法；探討了利用速率偏頻激光捷聯慣導撓性捷聯慣導陀螺的混合測量信息，通過神經網路實現硬故障交互檢測的方法。Baesd on the theory that moving target detectability can be enhanced by joint space - time processing with the application of frequency features and targets " characteristics, we focus our attention on particularies of sonars " target detection using underwater acoustic techniques and vehicle detection using computer vision techniques
本文注重在理論指導下的特殊性研究，即在聯合利用時間信息、空間信息、頻率信息以及目標特徵能夠提高運動目標檢測能力的思想指導下，分別研究了聲納的運動目標檢測和基於計算機視覺的交通車輛檢測。The methodology and innovation in this paper is : ( 1 ) the problems which include modulation and demodulation of the rate biased laser gyro ' s output, algorithm of attitude updates, etc. are analysed. ( 2 ) the component level fault interactions detection of sins based on rate - bias laser gyro / dynamical tune gyroscope by using artificial neural network is investigated
具有創新性的工作有：推導了速率偏頻激光捷聯陀螺測量信息的解調演算法；應用神經網路解決了速率偏頻激光捷聯慣導撓性捷聯慣導陀螺間的硬故障交互檢測。To study the of effect of insulator layer among tapes in a stack and the influence of frequency of ac transport currents on ac losses, ac losses of a single tape and stacks were measured for ac transport current with different frequencies in two cases : with and without insulator among the tapes in a stack. theoretical formulae to calculate hysteresis losses in stacked tapes were also presented
研究了高溫超導帶材及並聯堆疊帶材的交流損耗隨傳輸電流頻率的變化情況；及多根並聯組合超導帶間絕緣對交流損耗的影響情況；實驗研究了並聯堆疊帶材的各向異性特性；給出了有限根超導帶並聯時，磁滯損耗的理論計算公式。Meanwhile, the performance of joint estimation of time - delay and frequency using the reduced interference distribution ( rid ) is analyzed comprehensively
同時還利用減少交叉項分佈（ rid ）實現水下多目標信號的時延-頻率聯合估計。On the base of the fujian power system that has the special configuration of " large power generator with small power system " in 2000, constructs power system models of fujian and fujian interconnected with other parts, does a lot of calculation and analysis and simulation, researches the security mechanism and rule of the fujian special power system interconnected with large power system. the above connection can keep security and stability and can make obvious benefits, but when the transmission power reach to excessive quantity the main power grid will increases interconnected flow - in or flow - out exchange power load. the power operation state tended to instability ; the infirmable interconnection make s the damp infirmable
本文以2000年前後具有「大機組小電網」特殊結構的福建電力系統為背景，建立了福建電力系統及其與外部互聯的數學模型，開展大量的模擬計算分析，研究了「大帆組小電網」電力系統與大容量電力系統互聯偏弱的安全穩定性的機理和規律：前述互聯可以安全穩定運行，取得顯著效益，當傳輸功率達到一定量后，主網架增加了送出或吸收互聯交換功率的負載，系統運行狀態向穩定性水平有所下降的方向轉移；聯絡偏弱使阻尼偏弱，聯絡線小幅低頻振蕩和大幅低頻振蕩易被激發，聯絡線一旦重載斷開，系統高周或低調嚴重。Taking single four - quadrant power switch mode circuit as an example, the operational mode, steady principles, transient voltage feedback control strategy, the auxiliary switching power supply and parallel technology of this kind of converters are investigated. the output characteristic curve and the design for the key circuit parameters are given
以單四象限功率開關式電路拓撲為例，分析研究了這類變換器工作模式、穩態原理與電壓瞬時值反饋控制策略，給出了變換器的外特性曲線、關鍵電路參數、機內輔助開關電源的設計，對電流源高頻交流環節ac ac變換器並聯擴容技術進行了研究。High voltage shunt capacitor is applied to ac power system with rated voltage over 1kv for improving power factor and quality of power grid
高電壓並聯電容器用於工頻50hz或60hz 1kv及以上交流電力系統中，提高功率因數，改善電網質量。Drived by high voltage synchrobyne, this product is one of the series power packages of the largest power in industry in the world. and the basic unit of large pooaratus, which could replace the expensice imported products and play an important role in the high voltage and high current ac transmission vf power source
該產品成功的使用在大型高壓同步機的驅動上，是屬于投入工業運行的功率最大的串聯功率組件，是大型設備的基礎件，他不僅替代價格高的進口產品，而且為高壓大電流交流傳動的奕頻電源打下基礎The circuit topologies family of voltage mode ac - ac mode ac / ac converters with high frequency link include eight circuit topologies, such as single forward mode, interleaved - forward mode, push pull - full wave mode, push pull - full bridge mode, half bridge - full wave mode, half bridge - full bridge mode, full bridge - full wave mode, and full bridge - full bridge mode etc. the circuit topologies family of current mode ac - ac mode ac / ac converters with high frequency link include single four - quadrant power switch mode, push - pull mode, half - bridge mode, and full - bridge mode circuits. taking full bridge - full bridge mode circuit as an example, principle of uni - polarity phase shifting controll is introduced
電壓源交?交型高頻環節ac ac變換器電路拓撲族，包括單正激式、並聯交錯正激式、推挽全波式、推挽橋式、半橋全波式、半橋橋式、全橋全波式、全橋橋式八種電路；電流源交?交型高頻環節ac ac變換器電路拓撲族，包括單四象限功率開關式、推挽式、半橋式、全橋式四種電路。分享友人