振蕩相位 的英文怎麼說

中文拼音 [zhèndàngxiāngwèi]
振蕩相位 英文
oscillation phase
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 蕩 : Ⅰ動詞1 （搖動; 擺動） swing; sway; wave 2 （無事走來走去; 閑逛） loaf; wander; roam; loiter; go a...
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 位 : Ⅰ名詞1 （所在或所佔的地方） place; location 2 （職位; 地位） position; post; status 3 （特指皇帝...
  • 相位 : phase position; phase
  1. The near - stoichiometri litao3 has excellent speciality, such as high efficient conversion, tune conveniency, biger size and high damnify value etc. in this dissertation, the theory of quasi - phase - matched ( qpm ) technology and optical parametric oscillation ( opo ) was expatiated and studied first

    近化學計量比litao3 （ slt ）晶體在做參量振蕩方面具有轉換效率高、調諧方便、尺寸大、損傷閾值高等非常好的特性。本文首先對準相位匹配技術和光學參量震蕩器的理論進行了闡述和分析。
  2. Curves of the set - up and water level are offered. the water level is inverse ratio to the average depth of the sea

    從近似水位表達式可以看出，增水水位與平均水深成反比；風暴潮與天文潮的非線性相互作用出現了明顯的潮周期振蕩。
  3. Surface transverse wave has the 1. 6 high frequency than rayleigh type surface acoustic wave ( using the same technology the frequency of devices of stw has about 1. 6 high frequency than rayleigh type surface acoustic wave ). the paper introduces the theory, design parament, technology and result expeiment of surface acoustic wave ( includes rayleigh surface acoustic wave and surface transverse wave, simple stw ) with low insertion loss, high q and researches the high frequency, low phase noise oscillator with 1ghz stw resonator as frequency element. and describes measurement method and finally experimantal result of the low phase noise surface acoustic wave oscillator

    本文研究了以低損耗、高q值聲表面波（其中包括聲表面瑞利波- - rayleighsurfaceacousticwave ，和聲表面橫波等）諧振器的工作原理、設計參數、製作工藝及其實驗結果，並且研究了以1ghzstw諧振器為頻控元件的高頻率、低相位噪聲聲表面波振蕩器，以及低相位噪聲聲表面波振蕩器的測試方法和最終的測試結果。
  4. The expresson of phase balance among the degenerate amplifier of self - excitation and oscillator

    相位平衡條件在負反饋放大器的自激與振蕩器中的表述
  5. Abstract : we have studied the spontaneous emission from a three - level atom with an external - driving field in a photonic crystal. as a result of quantum interference and photon localization, the population in the two upper levels displays quasi - oscillatory oroscillatory behavior. this depends on the initial atomic state and the relative positions of the two upper levels from the forbidden gap. the intensity and the phase of the external field can affect spontaneous emission from the atom. the properties are different from a three - level atom either in vacuum or in aphotonic crystal without an external driving field

    文摘:討論了在雙光子驅動場作用下，三能級原子在光子晶體中的自發發射問題.由於量子干涉和光的局域化作用，兩個上能級中的占據數將具有周期振蕩或準周期振蕩的性質，這不僅依賴于兩個上能級與禁帶的相對位置，同時也依賴于原子的初始狀態，而且還與驅動場的強度、驅動場的入射位相有關.這些性質既與真空中帶有驅動場的原子的自發發射性質不同，也有別于無驅動場作用下光子晶體中三能級原子的自發發射性質
  6. According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d

    本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。
  7. Gps is a planet wireless conductance system which is global and all - weather, gps can offer high precision time orientation information to infinite user, clock precision reachs 10 ? 6 magnitude 。 not only changes traditional time method of quartz crystal clock, but also replaces wireless shortwave and even more lowfrequency signal and tv signal whose overlay range is limited and low precision, offers advantage to geology field task, achieve automatization and high precision of seismic flow observation

    利用gps授時信號全方位、全天候、連續性、實時性和高精度的特點，以gps信號為基準來校準本地時鐘（晶體振蕩時鐘或原子鐘） ，將gps接收機輸出信號的長期穩定度和恆溫晶振的短期穩定度相結合，應用大規模可編程邏輯器件，設計和實現了由pc104控制的實時在線授時系統。
  8. Theoretically, on the bases of the physical and chemical characters of nonlinear frequency - conversion crystal ktp, the parameters such as walk - off angel, acceptance angle and effective nonlinear coefficients are calculated, analyzed and discussed, together with elaborate analysis to phase - matching process for type ii ktp opo phase - matching

    在晶體的光學性能方面，根據ktp的物理和化學性能，對它的有效非線性系數、走離角和接受角等參數進行了計算、分析和討論。對ii類相位匹配的ktp晶體在參量振蕩過程中的相位匹配進行了詳細的分析和計算。
  9. The characteristics of precipitation anomalies in summer, previous and simultaneous ssta and preceding winter accumulated snow depth anomalies corresponding to positive and negative phases of 10 - yr mode and 25 - 30 - yr mode are discussed respectively. no matter for 10 - yr mode or for 25 - 30 - yr mode, reverse characteristics corresponding to positive phases and negative phases appear in the above fields. it proves that the decadal variation of sah have a good relation to the decadal variation of other key element of climate system and we can regard sah as a strong signal of the anomalies in the climate system

    （ 4 ）夏季南亞高壓東西振蕩具有明顯的年代際變化特徵，本文分別討論了對應於10年周期態的正位相年和負位相年及25 - 30年周期態的正位相年和負位相年時夏季我國降水距平、前期及同期海溫距平及前冬青藏高原積雪距平的分佈特徵，發現無論是10年周期態還是25 - 30年周期態，對于夏季南亞高壓東西振蕩的正位相年和負位相年以上各要素場呈現為很好的反位相特徵，說明夏季南亞高壓的年代際變化與氣候系統中其他要素的年代際變化具有很好的關聯性，可將南亞高壓看作氣候系統中大氣子系統異常的強信號，通過分析南亞高壓的年代際異常可以更直接地研究和預測區域氣候異常。
  10. Thus it is suited for generating new w avelength, especially in uv wavelength. we obtained the curves of the angle tuning, threshold and efficiency of clbo both in type - i and in type - ii phase matching ( pm ) in this paper, and compared to that of bbo

    論文完成了clbo晶體光參量振蕩在、類相位匹配時的角度調諧曲線，雙諧振、單諧振條件下的振蕩閾值及轉換效率曲線，並與bbo晶體進行了比較。
  11. We presents a detailed studied of the linewidth of parametric light in clbo - opo caused by the linewidth of pumping beam, off axis phase matching, divergence angle of pumping, time above threshold, high gain coefficient of nlo crystal, fluctuate of cavitylength, spontaneous radiation, according to the momentum and energy conversion laws, and the sellmeier equations of the clbo, we calculated curves of the type - i and type - ii compared with the bbo ' s

    根據能量動量守恆關系和clbo的色散方程，詳細分析了由於泵浦光的線寬、泵浦光偏軸泵浦、泵浦光的發散角、泵浦光功率超過參量光振蕩閾值一定倍數、高增益系數、有效腔長波動以及自發輻射引起的參量光線寬，並得到了與bbo晶體在類、類相位匹配下比較的理論曲線。
  12. In chapter 3, we studied the effect of gaussian transverse profile for the driving and laser fields on lasing without population inversion ( lwi ) in a closed v - type system and an open v - type system. moreover, we discussed also the effect of the unsaturated gain coefficient, the cavity - damping rate, the ratio of the atomic injection rates and atomic exit rate on the corresponding systems. in chapter 4, we mainly discussed the effect of doppler broadening on the gain, dispersion and the frequency up - conversion of the open v - type lwi system and compared the differences and the same between the open system and the corresponding closed system

    發現： （ 1 ）在考慮doppler展寬的情況下，通過選取合適的實驗室條件（比如合適的原子環境溫度等）可得到合適doppler展寬值，從而使系統獲得最佳增益； （ 2 ）要想實現系統的頻率上轉換，同時又要獲得足夠強的無反轉激光增益，則系統頻率轉換比不能選取的太大； （ 3 ）對于開放系統，比較小的粒子注入速率比與退出速率對產生無反轉激光是有利碩士學位論文摘要的： （ 4 ）由於dopp1oy展寬的存在，當探測場與驅動場的傳播方向相反時，增益在探測場失諧的某一段區域產生振蕩，且振蕩的振幅、頻率失諧范圍的大小與dopper展寬的取值有關。
  13. And then the theoretic technique of import the periodically wave of periodically poled crystals in the process of opo was studied, the theoretical method was realized by using period poled crystal in quasi - phase - matched optical parametric oscillation

    研究了將周期極化晶體的周期波矢引入光學參量振蕩過程，利用周期極化晶體實現準相位匹配光學參量振蕩的理論方法。
  14. Northeast china floods season precipitation take place a mutation in 1967. the distribution of northeast china floods season precipitation anomalies shows different phase in different years. ( 3 ) northeast china precipitation anomalies shows complex periodic variation in different seasons and in different years, but all the season exist periodic variation of quasi - three years and over 10 years to different extent

    汛期降水異常的空間分佈在不同年代有不同的位相分佈特徵（ 3 ）東北地區降水不同季節不同年代表現出了較為復雜的周期特徵，其中各季都表現出了明顯的準3年振蕩的周期特徵，同時還不同程度存在10年以上的周期。
  15. Furthermore, the fiber phase - conjugator has been used in ld - pumped solid - state laser system with four - pass configuration to suppress the self - oscillating ( so ) phenomena caused by amplified spontaneous emitting ( ase ) in laser amplifier. when using 200 m fiber, the energy of so has been successfully decreased from 12mj to below the precision of energy - detector

    將光纖相位共軛鏡應用於四通放大結構中，有效抑制了放大級中的放大自發輻射引起的自激振蕩現象，使得自激振蕩輸出能量從12mj降低到能量計最小精度以下。
  16. With consideration of parameters trade - offs involved in the circuits, the vco ’ s topology is designed

    考慮壓控振蕩器設計指標的相互約束條件，盡可能減小相位噪聲的來源，設計電路的拓撲結構。
  17. Inside the integrated circuit ic1, after suitable divisions, the two frequencies are sent to the phase comparator that generates the lock voltage of the secondary oscillator

    在綜合電路ic1的內部，經過合適的劃分，兩個頻率被送往相位比較儀，這兩個頻率產生二級振蕩器的鎖電壓。
  18. But in the east, 30 ~ 60 - day low frequency propagates toward north and west and 10 ~ 20 - day low frequency spreads to south from mid - latitude as well as to east from 90 " e. 10 - 20 - day and 30 - 60 - day low frequent rain band centers, located in south china, upper - middle yangtze basins, northeast china, north china and the west part of china, are all important parts of asian summer monsoon rainfall

    東部地區， 30一60天振蕩有明顯的向北及向西傳播; 10一20天低頻降水隨位相從中緯度向南傳播，同時從90 ? e向東傳播。東部地區的10一20天和30一60天低頻雨帶中心都是東亞夏季風降水的重要組成部分，當地的夏季風降水受這兩種低頻振蕩調制。
  19. In this paper, the operation principle of the oscillator is analyzed first, from the point of view of theory the designs of crystal resonator and its equivalent circuit, crystal oscillator and thermostatic chamber are defined. the noise model of circuit is used to analyze key factors influencing phase noise of the crystal oscillator, in order to control phase noise of the crystal noise from the very beginning of the design

    本文首先分析了振蕩器的工作原理，從理論的角度闡明了晶體諧振器及其等效電路、晶體振蕩器和恆溫箱的設計，利用電路的噪聲模型來分析影響晶體振蕩器相位噪聲的關鍵因素，從設計就開始控制晶振的相位噪聲，為更好地實現課題的目標打下良好的基礎。
  20. The resonance network is connected to the gate, then the output and input matching network is designed to satisfy the oscillation criteria. then harmonic balance method is used to analysize and optimize the output power and phase noise. to minimize the load pulling effect a buffer amplifier is designed to isolate the oscillator and the load

    本文在場效應管fet柵極上加上諧振網路（諧振網路是通過cst模擬得到的，它是串聯反饋迴路，介質工作在te01模，對于其後的fet ，它又相當於一個帶阻濾波器） ，然後設計輸入輸出匹配電路，使電路結構滿足起振條件，之後繼續用諧波平衡法模擬和優化，使振蕩器輸出功率合適，相位噪聲很低。
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