調諧波段 的英文怎麼說

中文拼音 [diàoxiébōduàn]
調諧波段 英文
tuning band
  • 調 : Ⅰ動詞1 （配合得均勻合適） harmonize; suit well; fit in perfectly 2 （使配合得均勻合適） mix; adju...
  • 諧 : Ⅰ形容詞1 （和諧） in harmony; in accord; in tune 2 （詼諧） humorous Ⅱ動詞（商量好; 辦妥） come t...
  • 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...
  • 段 : Ⅰ量詞（部分） section; segment; part; paragraph; passage Ⅱ名詞（姓氏） a surname
  • 波段 : [電學] wave band; wave range; band; range; frequency range; frequency band
  1. Because of the elements which run under nonideal linearity and unentire symmetry in the power system, the loads which are different and change randomly, the methods which adjust and control the system faultily and operate improperly, the disturbance and the malfunction which happen somewhere, the current and voltage in the supply system are distorted seriously and thus large amount of harmonics are produced

    但是，由於電力系統元件運行的非理想線性或非完全對稱、負載的性質各異且隨機變化、調控手段的不完善以及錯誤操作、外來干擾和各種故障的存在，供電網中的電流（電壓）發生畸變，產生大量諧波。
  2. Firstly. operation principle of induction heating is introduced and the actuality of the power supply for induction heating is summarized. then, the scheme of structure of the power supply is established : uncontrolled rectifier and buck chopper constitute dc circuit. in this part, operation principle of a kind of soft switching buck chopper is presented mainly and the conclusion that the power semiconductor devices operate in soft switching is also illustrated by analysing the operation principle of all stages ; series resonant inverter is selected as inverter circuit via comparing the advantage and shortcoming of parallel resonant and series resonant. moreover. the work principle of series resonant inverter is analysed and the calculating method of the best dead time is put forward as well

    文中首先介紹了感應加熱電源的工作原理並綜述了國內外的研究現狀。接下來分析並制定了電源主電路的構成方案：在對比幾種功率調節方式的基礎上選擇了不控整流加斬波調壓作為直流部分。在這部分里，重點研究了一種軟開關buck變換器，通過分析各階段的工作原理說明了開關器件如何工作在軟開關狀態；對于逆變器部分，在比較了串、並聯逆變器優缺點的基礎上選擇了串聯諧振逆變器，並詳細分析了串聯逆變器的工作原理，提出了最佳死區的計算方法。
  3. The research is focused on the influence of the size of the coupling port, coupling line and the capacitive metal rods in cutoff waveguide on the gap impedance

    研究結果表明：模雙間隙腔連接截止波導段的耦合口的尺寸主要影響輸出腔的外觀品質因數，而耦合接頭的粗細和電容性銷釘的大小和插人深度對截止波導濾波器的調諧具有重要影響。
  4. All band tv tuner

    全波段電視調諧器
  5. 2. second harmonic generation in superlattice is derived from the coupled equation of three waves i discusing the relationship between the period of ppln and pumping wavelength. 3. on the theory of optical parametric oscillators, ppln - opo are analyed. theoretical analysises on temperature tuning and period tuning are presented

    以光參量振蕩理論為基礎，分析了ppln opo在不同泵浦波段的調諧特性，重點討論了加ln opo的溫度調諧和周期調諧特性以及ppln opo的溫度帶寬周期帶寬，從理論上研究了ppln opo信號光的轉化效率和輸出特性。
  6. Band setting tuning condenser

    波段選擇用調諧電容器
  7. Methods of measurement on receivers for satellite broadcast transmissions in the 12 ghz band. part 2 : electrical measurements on dbs tuner units

    12 ghz波段衛星廣播發射用接收機的測量方法.第2部分:直播系統調諧裝置的電測量
  8. Methods of measurements on receivers for satellite broadcast transmission in the 12 ghz band. part 3 : electrical measurements of overall performance of receiver systems comprising an outdoor unit and a dbs tuner unit

    12 ghz波段衛星廣播發射用接收機的測量方法.第3部分:包括一臺室外裝置和一臺直播系統調諧裝置的接收系統總性能的電測量
  9. Two - segment distributed feedback ( dfb ) semiconductor lasers can achieve tuning with single longitudinal mode in a certain wavelength range ; at the same time, its superiority also includes bistablity and wavelength conversion

    其中，兩段式分佈反饋（ distributedfeedback ， dfb ）半導體激光器可以在一定波長范圍內實現單縱模、可調諧工作；同時，它還具有雙穩、波長轉換等功能。
  10. The resonation fog needs shorter fiber or waveguide to realize the same sensitivity, comparing with the interference fog. it can realize integration in silicon planar waveguide module and integration of ring cavity, input and output optical circuits and modulator in single chip of planar waveguide. it fits the rmog very much, which stands for the trend of miniaturization of gyroscope

    干涉式光纖陀螺已經進入實用化階段，與干涉式光纖陀螺相比，達到同樣的靈敏度，諧振式光學陀螺需要的光纖或波導長度要短得多，可以實現將環形腔、輸入輸出光路、調制器等在單片平面波導上的集成，特別適合於微型光學陀螺（ rmog ） ，代表將來陀螺小型化的發展趨勢。
  11. Band spread system enables you to easily tune in sw stations

    波段擴展系統，可讓您較容易調諧sw電臺。
  12. On the basis of this, the effective reflective index with the variation of the carrier density is discussed. this paper also analyzed the random facet phase and the length of the cavity ' s influence on threshold characteristic. especially, the wavelength tuning characteristics have been investigated in detail when one segment works as absorbed region

    在此基礎上，研究了每一段等效反射率譜曲線隨載流子濃度變化的情況；分析了邊界相位的不確定性以及激光器腔長對閾值特性的影響；重點討論了其中一段工作在吸收狀態下的波長調諧性質。
  13. It shows that the active channel with sizeable optical gain and a substantial increase of the refractive index are promising for the realization of active waveguide tunable laser

    研究表明，室溫下有源溝道具有較大的光增益和折射率增量，有望實現可見波段的可調諧有源光波導激光器件。
  14. This paper studies on used the ac servo system based on ti dsp ( lf2407a ) and the foc and digital signal processing thorem, achieves following results : algorithm. we employ svpwm ( space voltage pwm ) algorithm, improve the efficiency of the electric source, and decrease the harmonious elements. we build the mathematic model of the system and simulate it on matlab platform, dsigne segmented pid regulator to adapt variable speed and widen the speed range. measurement. the velocity and electric current measuring, we adopt multi - sampling - rate and digital filter principles. as more improvements we make, the whole system gets a good results. pc control. the complete controlling system can be controlled remotely. so we develop the pc controlling program.

    採用磁場定向脈寬調制演算法，提高了電源利用率，降低了逆變電壓的諧波，改善了電機的運行特性，降低了對電網的污染；在matlab平臺上建立了交流永磁同步伺服電機和電壓空間矢量脈寬調制控制系統的數學模型，在模擬的基礎上，對傳統pid調節器進行了改進，提出轉速調節器和電流調節器採用分段pid結構，根據給定轉速所處的區間，自動選擇相應pid調節器的參數，拓寬了調速范圍，提高了控制精度。
  15. This thesis describes some work on improving the performance of lasers, which i have carried out during the past three years. follows are the main points : 1. both littrow and littman set - up of 800nm - band external - cavity diode laser systems are studied

    本論文本著追蹤發展、面向應用、有所創新的原則，在改善激光器性能方面做了一些工作，主要包括： （ 1 ）對800nm波段littrow和littman結構的弱耦合可調諧外腔半導體激光器進行了實驗研究。
  16. In the field of fundamental research, such as quantum optics, blue light can be used as a pump source of optical parametric oscillator ( opo ) to generate the neoclassical light fields around wavelength of 860nm, which can be detected with 99. 9 % of quantum efficiency, the highest efficiency in the measurement of neoclassical light as known yet it is also possible to generate the squeezed vacuum state at 852nm, which is the resonance wavelength of the transition line d2 of cesium atoms and can be supposed to investigate the properties of atomic radiation in the interaction between atoms and quantum state of light fields

    在量子光學中，該藍光作為下轉換的泵浦源，可以產生860nm非經典光場，其探測效率可達99 . 9 ，高於目前產生的其他任何波段的非經典光場。同時通過溫度調諧，可望產生與銫原子d2線作用的852nm波段的壓縮真空態，從而開展非經典光場與冷原子的相互作用等方面的實驗研究。本文主要通過knbo _ 3晶體外腔諧振倍頻技術來產生藍色激光光源。
  17. The study of remote sensing ch4 concentration based on tunable diode laser absorption spectroscopy

    波段可調諧二極體激光吸收光譜的二次諧波檢測研究
  18. A new type of x - band high power microwave source - the resonator cerenkov oscillator - tapered amplifier tube ( rco - tat ) is put forward for the first time in the present paper. the proposed high power microwave device is based on a comprehensive investigation of related research work in the world and is in agreement with the demands to the development of practical high power microwave sources

    在較全面調研和認真分析高功率慢波器件發展趨勢的基礎上，結合返波振蕩器等切侖科夫器件和漸變錐形結構微波器件的特點，提出了一種新型x波段高功率微波發生器?低磁場諧振腔切侖科夫振蕩器?錐形放大管（ rco - tat ） 。
  19. So a new kind of microwave cavity - mode strongly coupling double gap cavity, which has higher characteristic impedance, smaller volume and fits in with lower frequency band multi - beam klystrons, is proposed

    並提出了一類新型的、具有較高特性阻抗和較小體積的低頻率波段多注速調管輸出腔?模強耦合雙間隙微波諧振腔。
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