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propagation distance中文是什么意思

  • 傳播距離

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  • 例句與用法
  • 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(diǎn): 1調(diào)度平臺(tái)發(fā)出的信號(hào)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(shí),只要各向異性樣品的傳播距離小于換能器直徑的兩倍,測(cè)得的速度認(rèn)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(chǔ)上得到了激光在等離子體隧道中傳輸?shù)陌j(luò)方程以及光斑半徑與傳輸距離、隧道寬度等初始參量的關(guān)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(zhǎng)頻率以及最大增長(zhǎng)因子不再像原始b - t理論中那樣保持不變,它成了和光強(qiáng)、介質(zhì)增益系數(shù)及傳播距離有關(guān)的一個(gè)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(jì)算例說(shuō)明在近場(chǎng)隨衍射角的增大會(huì)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(chǎng)隨傳輸距離變化而變化,但在遠(yuǎn)場(chǎng)保持不變。
  • 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(chǔ)上,計(jì)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(yù)報(bào)模型;計(jì)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(xiàn)是:把光束的傳輸方程nnlse簡(jiǎn)化成一線性形式的近似方程,發(fā)現(xiàn)可以通過(guò)調(diào)節(jié)強(qiáng)孤子光束的功率來(lái)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(yīng)和光學(xué)kerr效應(yīng),首次利用力學(xué)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(xì)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(guān)系,提出了實(shí)現(xiàn)長(zhǎng)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(qiáng)一弱共同傳輸?shù)墓伦庸馐鵀槔M(jìn)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(dāng)短的傳輸距離之內(nèi)能產(chǎn)生大的相移,可以通過(guò)對(duì)強(qiáng)光(泵浦光)能量的調(diào)控來(lái)實(shí)現(xiàn)對(duì)弱光(信號(hào)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(yán)格解析解,討論了基模高斯脈沖孤波傳播的條件。
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