propagation distance造句
例句與造句
- At present , there are all kinds of digital program exchange systems , but these devices are of the following faults : 1 relatively short propagation distance
目前，數(shù)字程控調(diào)度交換系統(tǒng)雖然品牌眾多，但都具有如下特點： 1調(diào)度平臺發(fā)出的信號傳輸距離短。 - When the experimental frequency is above the critical frequency of 0 . 5 mhz , that the measured velocities are phase velocities must demand that propagation distance in the anisotropy media is less than two times of the transducer ' s diameter
以0 . 5mhz頻率為界，大于此頻率時，只要各向異性樣品的傳播距離小于換能器直徑的兩倍，測得的速度認為是相速度。 - The envelope equation of laser propagating in the plasma channel , and the general expression related the laser spot size with the propagation distance and the width of the plasma channel etc . , are derived based on the hamilton - jacobi equation and the refractive index equation
在此基礎上得到了激光在等離子體隧道中傳輸?shù)陌j方程以及光斑半徑與傳輸距離、隧道寬度等初始參量的關系。 - The results also indicate that , in a piece of gain medium , the cutoff frequency , " the most quickly growing frequency " and the integral exponential gain are variables of the beam intensity , medium gain coefficient and propagation distance
在考慮了介質(zhì)的增益后，截止空間頻率、最快增長頻率以及最大增長因子不再像原始b - t理論中那樣保持不變，它成了和光強、介質(zhì)增益系數(shù)及傳播距離有關的一個量。 - Numerical examples show that , pulse deformation and broadening , spectrum redshifting , narrowing and distortion take place with increasing diffraction angle in the near field , and the pulse form changes with propagation distance in the near field , but is preserved in the far field
數(shù)值計算例說明在近場隨衍射角的增大會出現(xiàn)脈沖變形、加寬、譜紅移、變形、變窄等特性，脈沖形狀在近場隨傳輸距離變化而變化，但在遠場保持不變。 - It's difficult to find propagation distance in a sentence. 用propagation distance造句挺難的
- Then , after computing xpd induced by rain , its forecast model at different propagation distance is found . this paper also discusses the relation of reflectivity of rain with rainfall rate , taking different polarization wave into account , and that of fog with visibility
在研究了雨、霧介電特性的基礎上，計算了雨的去極化分辨率，得到了不同頻率、不同傳播距離的去極化分辨率預報模型；計算了不同極化狀態(tài)的波的反射率隨降雨率的變化規(guī)律。 - The main achievement of the paper is that the nnlse is simplified to a linear equation . it is found that we can controll a weak beam ' s phase to experience a very large phase shift within a rather short propagation distance by modulating the input power of a stronger soliton beam
本論文的主要貢獻是：把光束的傳輸方程nnlse簡化成一線性形式的近似方程，發(fā)現(xiàn)可以通過調(diào)節(jié)強孤子光束的功率來控制另一弱光的相位并能使之在極短的傳輸距離內(nèi)產(chǎn)生大的相移。 - The propagation of ultrashort laser pulse in air is analyzed with mechanics analogy by considering kerr effects and free electron defocusing . the equation describing the evolution of the laser spot is derived . it is shown that long distance focusing requires large initial beam and the propagation distance is very sensitive to the initial divergence angle of the laser beam
考慮多光子電離效應和光學kerr效應，首次利用力學類比的方法研究了超短脈沖激光在電離氣體中的傳輸，詳細分析了傳輸距離與激光初始光斑、初始發(fā)散角以及激光功率的關系，提出了實現(xiàn)長距離傳輸?shù)臈l件。 - As an example , we studied the co - propagation of two soliton beams with one ' s amplitude is much stronger than another . it is then found that the weaker ( probe beam ) can experience a very large phase shift within a rather short propagation distance by modulating the input power of the stronger ( pump beam ) . chapter 3 , nnlse is simulated for two beams propagation
以振幅一強一弱共同傳輸?shù)墓伦庸馐鵀槔M行了具體研究，相位分析顯示，與局域孤子相比，孤子光束在相當短的傳輸距離之內(nèi)能產(chǎn)生大的相移，可以通過對強光(泵浦光)能量的調(diào)控來實現(xiàn)對弱光(信號光)的相位調(diào)制。 - Abstract : based on two order approximation of the variation of refraction index produced by self - action while optical pulses are traveling in kerr - medium , the propagation equation has been solved . furthermore , the strict analytical expressions of the amplitude , width and chirp parameter of chirped gaussian pulse , relative to the propagation distance , are deduced . the solitary wave traveling conditions of fundamental mode gaussian pulse have been discussed
文摘:將光脈沖在克爾介質(zhì)中自作用產(chǎn)生的折射率變化作二階近似，求解所得到的傳播方程，得到啁啾高斯脈沖幅度，脈沖寬度和周啾參數(shù)隨傳播距離變化的嚴格解析解，討論了基模高斯脈沖孤波傳播的條件。 - From the fresnel diffraction equation , we calculated the intensity distribution of the fhb in free space , and found that there is an interested propagation property of the fhb before the focal plane . that is , with the increase of the propagation distance z , the dark spot size ( dss ) of the fhb is first increased , and then decreased , the dss has the maximum value at the position of z = - f / 2
發(fā)現(xiàn)在焦平面之前有一個非常有趣的傳播性質(zhì)，即隨著傳播距離z的增加，這一聚焦中空光束的暗斑尺寸( dss )先從另變大然后再變小，最大的暗斑尺寸的位置在z = f / 2處。 - The fresnel and franhufer diffraction patterns , of regular shapes screen such as slits , rectangular apertures , circle apertures , discs , triangle apertures , ronchi gratings , and some irregular shapes screen , are observed in the different propagation distance . this clearly gives the relation and difference of the two diffraction patterns
具體分析了規(guī)則形狀如單縫、矩孔、圓孔、圓盤、三角孔、黑白光柵及一些不規(guī)則形狀等孔徑的菲涅耳衍射和夫瑯禾費衍射圖樣強度分布，為深入理解菲涅耳衍射和夫瑯禾費衍射及其內(nèi)在聯(lián)系與區(qū)別提供了理論依據(jù)。