efficiency band 中文意思是什麼

efficiency band 解釋
效率頻帶
  • efficiency : n. 1. 功效。2. 效率；效能；實力，能力。3. 【物理學】性能。
  • band : n 1 帶，繩；帶形物；箍；箍條；嵌條；鑲邊；鋸條； 〈pl 〉 （法官等的）寬領帶。2 束縛，羈絆；義務；...
  1. In the next place, by studying the change of the resonant frequency of the whole system, this paper designs the circuit to track the resonant frequency of the system by cd4046 mainly. at the same time, in order to improve the efficiency and get better dynamic capability of the converter, we choose pll and fuzzy control after comparing the pll circuit, fuzzy circuit and pll ? fuzzy control circuit. in the end, this paper brings forward the control blue print to realize the drive control circuit of the high frequency converter, using the dsp chip as the key part to realize four routes of pwm drive pulses with dead band of the control system

    其次，通過對整個系統諧振頻率變化的分析和研究，設計了以鎖相環cd4046為核心的鎖相環控制電路，同時，在綜合比較鎖相環控制、模糊控制以及模糊控制和鎖相環復合控制三種控制演算法的基礎上，進行了系統模擬，得出採用復合控制可使跟蹤電路既具有鎖相環路較好的穩態性能，又擁有模糊控制較好的動態性能，系統魯棒性能好，同時也提高了逆變器的效率。
  2. Sds - page results showed that there was a clear target protein band in mut + recombinant supernatant after 48 hours of culturing, while a faint band only in muts recombinant after 72 hours. western - blotting result showed that there was no remarkable difference of yield between mut + and muts recombinants after 6 days induced. anti - virus activity tests revealed that culture supernatants of mut + and muts recombinants could inhibit tmv infection with high efficiency in the same concentration and there was no significant difference between them

    結果表明，誘導培養48小時后， mut ~ +重組菌株表達產物在sds - page膠上顯現出清晰的目的蛋白帶，而mut ~ s重組菌株培養72小時才能顯示微弱的目的帶； western - blotting雜交信號強度表明，同樣培養6天的mut ~ +和mut ~ s重組菌株表達產物在表達量上沒有明顯差別。
  3. The holographic lens, which is designed according to bragg condition to eliminate aberrations, has both high efficiency and low aberration, and can be used in a certain narrow - band condition. a example and its results are also given in this paper

    該方法採用雙片離軸全息透鏡復合，按使用條件在布喇格條件下進行消三級像差設計，製作設計的全息透鏡具有高衍射效率高、像差小的特點，可以滿足任意給定的窄帶光場合。
  4. To decimators of multi - level system designed based on the hb filter and cic filter, analysis of the filter design parameters involved, whose theory applied to multi - level cic filter of design, and designed half band filter with distributed algorithms. compared to the simulation results. these advanced algorithms applications, and further increase hardware efficiency and operating speed

    對于基於積分梳狀（ cic ）濾波器和半帶（ hb ）濾波器的多級系統設計的抽取濾波器組，分析了濾波器設計中所涉及的各個參數，將剪除理論應用於多級積分梳狀（ cic ）濾波器的設計中，並且採用分散式演算法（ da ）來設計半帶（ hb ）濾波器，並對模擬結果進行比較，這些先進演算法的應用，進一步提高了硬體效率和運行速度。
  5. A high efficiency dual - band rf power amplifier has an output and / or input of a high frequency transistor well terminated at the second harmonic frequency for dual - band operation

    本發明乃一種高效率雙頻射頻功率放大器，提供高頻電晶體的輸出端與?或輸入端于雙頻操作中有良好的二階諧波終止。
  6. The system exhibits fast response for the load current disturbance and the system always operates at discontinuous conduction current mode so that no slope compensation is required and high efficiency will be achieved when driving 4 leds. the design and analysis of sub - block circuits are provide in the thesis where band gap reference, oscillator, current sensing and over current protection, led load current

    本文完成了各個單元電路的分析與設計，著重分析了帶隙基準源、振蕩器、采樣和過流保護、負載led電流控制和開負載保護五個子電路，對其餘子電路也作了簡要分析。
  7. By using depth - measurable band drains, the supervision engineer or engineering managerial personnel can measure or spot check the embedded depth of each band drain after construction if they were not at site when band drains were being driven, thus improving the construction efficiency and ensuring the engineering quality

    使用可測深型排水板可提高施工效率，當監理工程師或工程管理員不在現場對排水板打設進行直接監督和管理時，施工后可以對每根排水板埋設的深度進行測量或抽查，因而可有效控制和杜絕人為造成的偷工減料，確保施工和工程的質量。
  8. A x - band six - cavity tro is studied. with the voltage 760kv 6ka and the magnetic field 2. 6t in the simulation, output power is about 1. 5gw is obtained, and interaction efficiency is 31 %. a noveland high accurate numerical synthetic technique is presented for determining the high frequency characteristics of six - cavity with open boundary

    對粒子模擬的輸出微波功率的作出診斷，找到讀取微波功率快速有效的方法：在電場和磁場同相的前提條件下，對時域波形進行傅立葉變換，微波功率頻域的二倍頻所對應的幅度即為微波x波段渡越輻射振蕩器的理論和實驗研究平均功率的大小。
  9. Two cold - test parameters determine the working voltage, frequency band, efficiency and gain of twt. they are dispersion and interaction impedance of the slow - wave structures ( sws ) in twt, which are very important targets for twt

    行波管慢波結構的色散和耦合阻抗是行波管設計中兩個非常重要的冷參量，它們決定了整支管子的工作電壓、頻帶寬度、工作效率和增益。
  10. Guodian anshun power plant no. 1 boiler burner band ' s collapse leads to the increase of dust carbon content and the decrease of boiler unit efficiency

    安順電廠一號爐衛燃帶垮塌，飛灰含碳量升高，影響機組運行效率。
  11. From three - wave coupling equations, the optimal crystal length, conversion efficiency and parametric light pulse width are computed numerically when clbo is used in picosecond optical parametric amplification. the results present that clbo are suited for optical parametric amplification in short wave band. in order to get higher conversion efficiency, the crystal length should be optimized according to the intensities of pump and signal waves

    從三波耦合方程出發，對clbo用於皮秒級光參量放大時，最佳晶體長度、轉換效率和參量光的脈沖寬度進行了理論分析和數值模擬，結果表明clbo晶體適合在短波范圍作光參量放大，為達到高的轉換效率和窄脈寬的信號光輸出，泵浦光和初始入射信號光的強度應根據晶體長度取最優化值。
  12. I adopts rubber as insulation material including power cable, operating temperature is between - 30c and 180c. good heat conducting ability the tight connection of conducting band and crankcase can ensure high conduction efficiency

    電加熱帶線緊貼在壓縮機曲軸箱外殼，通電即可產生熱能直接進行導熱，熱效應高，可短時加熱達到效果。
  13. The applications of organic semiconductor as active layers in light - emitting devices offer several prominent advantages such as high efficiency, high brightness and low cost. another advantage is that the emitting wavelength can be chemically tailored due to the band gap

    有機半導體微腔調諧發光器，發射光波長可通過分子設計調節，在紫外到紅外的波長范圍內可調，實現全色光發射，受到人們的重視。
  14. With the carrier gas flux rising, the film ' s thickness and the degree of crystallization increase. the band gap decreased little, and the photocatalysed efficiency was enhanced

    隨著載氣流量的增加，薄膜的厚度增加，結晶性能提高，光學帶隙變窄，光催化效率增加，親水性沒有明顯變化。
  15. At the operating voltage and current less than rated values, the amplifier provides a maximum of 5. 94 - w ( continuous wave ) output power when driven into saturation. the average combining efficiency over the operating band was estimated at 82 %. the maximum combining - efficiency and the overall power - added efficiency ( pae ) is 87 % and 13. 6 %, respectively

    該功率合成放大器在低於mmics功率單片額定工作值的情況下獲得了1 . 7ghz帶寬的最大飽和輸出功率5 . 94w （連續波） ;整個帶內合成效率估計平均為82 % ，最大合成效率達87 % ，功率相加效率（ pae ）約為13 . 6 % ;若電源達到mmics單片的額定值，估計最大輸出射頻功率將會達到7w 。
  16. Design of a high output power, high combining efficiency power combiner at ka - band based on a slotted - waveguide was presented in this thesis. slotted - waveguide power divider, which achieves power - dividing and waveguide - microstrip transition at the same time takes the advantages of low profile, low cost and high combining efficiency

    用開槽波導同時完成功率分配/合成及波導-微帶過渡，具有體積小、合成效率高的特點，既不屬于空間功率合成又與傳統的電路合成有所區別。
  17. In order to increase the efficiency on using limited frequency resource, orthogonal polarization is normally adopted for frequency reuse, thus offering double bandwidth at the certain working band

    為了充分利用有限的頻譜資源，衛星通信採用正交極化頻率復用方式，在給定的工作頻段上提供雙倍的使用帶寬。
  18. The first ytterbium - doped yttrium - aluminum garnet ( yb : yag ) laser action was reported back in 1965 using a lamp - pumped rod at 77 k. because of poor spectral overlap of the lamp with the the trivalent ytterbium ion ( yb3 + ) absorption band, the efficiency was very low. lamp - pumped nd : yag lasers fared better due to the multiple pump bands of neodymium

    但yb3 +離子的泵浦吸收帶與閃光燈光譜匹配很差，導致其激光效率很低;而nd : yag的激活離子（ nd3 + ）有多個泵浦帶與閃光燈光譜匹配，較好適應了燈泵浦的需要，長期占據了固體激光器的主導地位。
  19. With the development of the electronic technology, the higher requirements of power supply are raised including high efficiency, high power density, low emi and rapid dynamic response. a hysteresis - band instantaneous current control pwm technique is popularly used because of its simplicity of implementation, fast current control response, and inherent peak current limiting capability

    隨著電子技術的發展，用電設備對電源要求不斷提高，開關電源正向著效率高、功率密度大、可靠性高、電磁干擾低、無噪聲、維護方便的方向發展。
  20. According to the current problems such as low quantum efficiency. limited available sun energy spectrum range, and inefficient recovery, resulted from the practical using of photocatalysis, using the narrowband semiconductor cds ( eg = 2. 5ev ) to compound with tio2 seems to be an effective solution. since it will not only enlarge the region of the absorption with the proper narrow band of cds but also improve the photodegradation efficiency on account of the band overlap of the two, which makes the photo induced electron and holes separate more easily

    本文針對光催化技術應用中存在的tio _ 2光催化量子效率低，吸收利用太陽能光譜范圍有限，催化劑回收困難等問題，通過窄禁帶半導體cds （ e = 2 . 5ev ）的復合，對納米tio _ 2進行了改性研究，一方面，由於cds的窄禁帶寬度可以擴展薄膜的光譜吸收范圍，另一方面，由於能帶的交疊，提高了光生電子和空穴的分離效率，從而提高了薄膜的光催化降解效率。
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