propagation length 中文意思是什麼

propagation length 解釋
傳播長度
  • propagation : 持續培養
  • length : n. 1. 長，長度，長短。2. （時間的）長短，期間。3. （賽艇的）一艇的長度；一馬的長度。4. 程度，范圍。5. 【板球】球程；投至適當距離的球。6. 【語言學】音長。7. 一段，一節。
  1. Based on huygens - fresnel diffraction integral theory, the propagation properties of bessel beam were studied in this paper. by using the analyses of geometrical optics, hollow beam are found and the formula of the starting point 、 the end point and the bottle length can be got

    論文中，我們基於惠更斯-菲涅耳衍射積分理論研究了由軸棱錐產生的貝塞爾光束的傳輸特性，並且通過幾何光學解析無衍射光束的聚焦特性。
  2. Except for a small length of web at the first fracture location, none of the cracks exhibited a brittle fracture mode of crack propagation.

    除第一個斷裂位置的一小段腹板外，沒有一條裂紋顯示出裂紋擴展的脆性斷裂模式。
  3. The gain characteristics of edwa have been investigated by solving numerically propagation equations and rate equations at pump wavelength 980nm. the gain characteristics are functions of waveguide length, erbium concentration and pump light power, so the relations between them are analyzed in detail in this paper. the size of edwa is also discussed here, which has some reference value for the following study and the design of waveguide amplifier

    通過解析速率方程和傳輸方程，在波長為980nm泵浦光作為泵浦源的條件下，對摻鉺光波導放大器的增益特性進行了分析，由於波導放大器的增益是波導長度、摻鉺濃度和泵浦功率的函數，因此本論文對三者與信號增益的關系分別進行了討論。
  4. Keeping displacement constant, the length of dfz decreased. the less the lattice resistance is, the longer the dfz is. during the crack propagation, the pile - up dislocations may move forward in the previous direction or in another direction which caused shape of dfz changed. the dislocations emitted from the crack tip might pile up in the dfz and can be served as dislocation source in the successive loading

    在裂紋擴展過程，反塞積位錯群發生變化，可以沿原來方向繼續向前運動，也可能改變運動方向使無位錯區的形狀發生變化，后來發射出的位錯可以在原五位錯區中塞積，並可作為位錯源在後續的加載中發射位錯。
  5. Chapter 4 : the paraxial propagation of partially coherent beams with the hermite - gaussian mode is investigated. the more generalized and simple expressions of the mean squared width and the beam quality factor of the beam with different mode order are obtained in terms of the cross - spectral density. our re - sults show that the higher order strengthens the variations of the mean beam width and the beam quality factor for partially coherent beams, and the relation between the two parameters of partially coherent beams is independent of the coherence length

    第四章：初步探索了部分相干厄米高斯光的傍軸傳輸，根據交叉光譜密度得到了其不同模階數的平均光束束寬和光束質量因子更一般的解析表達式，較高的模階數使得光束展寬得越快，光束質量變差，且這兩個光束參量的關系與部分相干厄米高斯光的相干長度無關。
  6. The thesis analyzed the effects, associated with the propagation of laser in plasma channel, such as diffraction, plasma defocusing, the third - order intensity - dependent nonlinearity, the relativistic self - focusing, the focusing and defocusing of the plasma channel, and the absorbtion in the collision plasma and the finite pulse length effect

    文中用哈密頓-雅可比方程方法和源展開方法分別對激光在等離子體隧道中傳輸所涉及的衍射效應、等離子體散焦效應、三階強度非線性、相對論自聚焦、等離子體隧道的聚焦和散焦效應、碰撞等離子體中的吸收效應、有限脈寬效應等等做了基本的闡述。
  7. The computational results of strong scintillation with weak turbulence but long propagation length indicate that the number of branch points in distorted optical field has a tendency to saturation

    另外，通過對湍流較弱但傳輸路徑較長的強閃爍條件下畸變光場中出現的相位不連續點數目的計算發現，當湍流效應達到一定程度時，相位不連續點的數目有達到飽和的趨勢。
  8. Chapter 3 : the source - dependent expansion ( sde ) method for analyzing the wave equation is introduced, which is an effective method for solving the paraxial wave equation with nonlinear source terms. two examples have been given to explain this method, which are the propagation of the ultrashort intense laser pulses propagation in the partially stripped plasma in which the collisions of plasma electrons are taken into account, and the propagation including the finite pulse length effect

    第三章：本章介紹了求解有非線性源項的傍軸方程的有效方法-源展開方法，並給出了兩個具體的例子，即考慮等離子體電子間碰撞的隧道傳輸的求解和考慮激光脈沖的有限脈寬效應的隧道傳輸求解。
  9. A special testing fixture and the crack length measurment method for crack fracture and propagation in mixed mode

    復合型裂紋斷裂和擴展速率試驗夾具及裂紋長度測量方法
  10. Various turbulence conditions, ranging from weak to strong, are considered as well as the dependence on turbulence strength, propagation length, wavelength, and the inner scales of turbulence are presented

    計算結果表明，相位不連續點的數目不僅與描述光強起伏量的大氣湍流強度、傳輸路徑長度和傳輸光的波長有關，而且還與湍流的內尺度有關。
  11. According to propagation equation of gaussian beam and matrix of misadjust resonator, as well as principle of cavity ring - down method and data processing of fitting, a physical model of reflectivity measuring is set up for misadjustment of cavity length or angle of titled cavity mirrors

    根據光束傳輸規律和失調腔矩陣方法，以及光腔衰蕩法測量原理和曲線擬合方法，建立了腔長、腔鏡角度失調下光腔衰蕩法的反射率測量模型。
  12. The less the lattice friction is, the longer time the dislocated emission keeps. the size of dfz and the morphology of pile - up dislocations would change during the crack propagation. the length of dfz increased as applied stress increased

    在保持恆位移過程中，裂尖位錯發射與運動還會持續進行一段時間，位錯運動的點陣阻力越小，位錯發射與運動持續的時間越長。
  13. Wherefore, other two energy - based fracture parameters are put forward : the stable fracture energy gfs, indicating the average energy dissipation during the crack stable propagation and the unstable fracture energy gfu, corresponding to the crack unstable fracture stage. wedge. ? splitting specimens are tested with a view to understanding those two parameters " size effect in terms of the initial crack length a0

    本文提出兩個能量型斷裂參數即穩定斷裂能g _ （ fs ）和失穩斷裂能g _ （ fu ）分別表示裂縫穩定擴展和失穩擴展階段的能量損耗，並採用楔入劈拉試件（ ws ）對這兩個參數相對初始縫長_ 0的尺寸效應進行了分析。
  14. The propagation delay will grow with increasing path length

    傳輸延遲也將隨路徑的延長而增大。
  15. To illustrate the superiority of this type of transition, the author adapted the local normal mode ( lnm ) based on couple - mode theory to explain the coupling between two lowest order modes along the transition. for the two important parameters, propagation constants difference between the two modes apy and mode coupling coefficient cy, which denoting power coupling between lnms, the approximation expressions using structure parameters were worked out. then the author compared three typical different transitions according to the demanding of power coupling, at last concluded that the parabolic - type transition can transport the light in shortest length with lowest loss

    對于表徵局部標準模之間功率耦合的兩個重要的參數_ （ ij ） （模式傳播常數差）和c _ （ ij ） （模式耦合系數） ，推導了用器件結構參數表達的近似公式，然後根據功率耦合的需求，在常見的三種不同輪廓的過渡區之間進行了比較，得出了拋物形輪廓過渡區能夠使光束在最短尺寸內以最低損耗通過波導的結論。
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