頻散波 的英文怎麼說

中文拼音 [bīnsǎnbō]
頻散波 英文
dispersion wave
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 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...
  1. The ionosphere is a complex medium, which is aeolotropy, asymmetry, dispersive and changes randomly with time. in order to improve the communication quality of the shortwave that depends on the ionosphere, we should have aknowledge of the current condition of the ionosphere in real time. the backscatter sounding of high frequency can diagnose the real - time channel characters for shortwave communication or hf radar, which is great assistant to shortwave communication and hf radar

    電離層是隨機時變，各向異性，非均勻、色散的復雜介質。為了保證依賴于電離層進行的短波通信質量，必須了解電離層的實時狀態信息。高頻返回散射探測可以實時監測與短波通信或高頻天波雷達相關的天波傳播通道的狀態，對短波通信和天波雷達工作起了重要的輔助作用。
  2. However, the earliest long-period seismographs recorded dispersive waves with large transverse displacement components in the main tremor.

    但是，最早期的地震記錄，就記錄下了主震中具有很大橫向位移分量的頻散波。
  3. Frequency equation of axisymmetric guided waves in composite structures of bonding metal bars

    錨固金屬桿復合結構中軸對稱導波的頻散方程
  4. Firstly, the disperse characteristics and the related theoretical results of the guided waves in different materials and distinct structures are introduced

    介紹導波在不同材料和結構中的頻散特性及與之相關的理論成果。
  5. In this paper, high - order accurate weighted essentially non - oscillatory ( weno ) schemes are investigated and their applications in hyperbolic conservation laws are discussed. based on this, a new weno difference scheme which based on dispersion - relation - preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics ( caa ) problems has been implemented and compared in order to test capability of wave capturing ; in addition, weno schemes generally do not converge at high order in the presence of contact discontinuity of euler equations, so a conservative front tracking technique coupling weno schemes and level set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy

    本文研究了高階精度加權基本無振蕩（ weno ）格式及其在雙曲守恆律方程中的應用，在此基礎上作了兩個方面的工作：一是針對高頻聲波問題構造出一種基於保色散關系（ drp ）的weno有限差分格式，並對計算氣動聲學（ caa ）問題的代表性算例進行了大量數值實驗，比較了該格式捕捉波數的能力；另外，針對高階weno格式在處理euler方程的接觸間斷時精度有所降低的問題，研究了利用界面追蹤技術levelset方法和高階激波捕捉weno格式相結合的一種守恆追蹤方法，並且給出有代表性的密度滑移面問題的算例，得到一致高階精度的數值模擬結果。
  6. Propagation of spectra affected by third - order dispersion in dispersion - decreasing fiber near zero dispersion wavelengths was studied by means of numerical simulation

    摘要為探討三階色散對脈沖傳播的意義，用數值模擬的方法討論了在色散緩變光纖中零色散波長附近三階色散對脈沖頻譜演變的影響。
  7. Two of the most predominant characteristics of surface wave are dispersion and attenuation which are the effective tools to study the velocity structure and viscidity structure of the earth interior

    頻敵和衰減是面波傳播中的兩個基本特徵，利用面波頻散和衰減可以有效地研究地球內部速度結構和粘彈性結構。
  8. When the source frequency increases, the dispersion and the attenuation of signals become great, but the resolution is better

    當聲源主頻增大時，波形頻散現象較嚴重，幅度衰減較大，但探測能力增強。
  9. Mixed boundary and frequency dispersion suppressing in elastic wave numerical simulation

    彈性波數值模擬的混合邊界與頻散抑制
  10. It ' s main idea that making use of frequency dispersion of rayleigh wave to reveal geology structure of low layer

    其主要思想是利用瑞雷波的頻散特性來反映淺層地質問題。
  11. Determination of total lead content of petrol with a lead content exceeding 25 mg l by wavelenght - dispersive x - ray spectrometry

    第6部分:採用波長頻散x射線光譜測定分析法對鉛含量高
  12. Testing of lubricants ; determination of molybdenum content of lubricating oils ; analysis by wavelength dispersive x - ray spectrometry

    潤滑劑檢驗.潤滑油中鉬含量的測定.第2部分:波長頻散x
  13. Based on this model, a method was developed to obtain certain guided mode signal form ae signals. the final results showed that the method could reduce the multimode and disperse influence to ae signals effectively and locate the leak source correctly

    在此基礎上，利用結構頻散特性確定相關參數、提取單一導波模態的方法，減小了多模態和頻散特性對定位的不利影響，從而較好地實現了泄漏源的定位。
  14. Rayleigh wave method is a jumped - up and effective in - situ test. we can inverts the velocity structure of the strata through the quantitive interpretation of dispersion curve of rayleigh wave with this method, then distinguish and determine the physico - mechanical properties of the strata by the wave velocity in order to solve the geotechnical problems

    瑞利波法是近年米新興的、行之有效的原位測試方法，該法通過定量解釋實測瑞利波頻散曲線，反演地層速度結構，利用波速區分和確定地層物理力學特性，以解決巖土工程問題。
  15. Because the synthetic seismic record and the seismic record data got in the surface are not well matching caused by the dispersion of seismic wave, frequent correction between them must be done before use. under control of well logging data, there are two important methods to get wave impedance from seismic data inversion : wave impedance inversion method based on convolution model and wave impedance inversion method based on wave equation. using seismic data attributes can predict the information of logs

    測井資料和地震資料是地震勘探中兩種最重要的資料，由於地震波的頻散，使合成地震記錄與地面地震記錄不能完全匹配，因此使用之前必須對二者進行頻率校正地震資料在測井資料約束下可以進行反演，以求取地下波阻抗，主要有兩種方法：基於褶積模型的波阻抗反演方法和基於波動方程的波阻抗反演方法可以用多屬性變換由地震資料預測測井信息。
  16. In the wavefield - spread area, we uses the phase - shift operator as constraint in frequency - wavenumber field, while beyond the wavefield - spread data, we uses zero point at the ends of phase - shift operator as constraint to take discrete smooth interpolation so that the resulted operator satisfies two - order smooth and the length of this operator can be selected shorter in frequency - space field

    通過離散光滑插值法，在頻率波數域中，以傳播區內的相移運算元為約束，在傳播區外的運算元兩端處以零點為約束，進行離散光滑插值，使得所得運算元具有二階光滑可導性，則其對應的頻率空間域中的運算元就可以取得很短。
  17. Moreover, we analyze the frequency dispersion of rayleigh wave firstly, then we introduce the two methods of surface wave exploration

    本文首先分析了瑞雷波的頻散特性，並介紹了瑞雷面波勘探的兩種方法。
  18. According to the radar - absorbing model, the performance of rams of various absorber - volume - percentage with various frequency and the radar obsorbing performance of which in various thickness is predicted. according to the radar - absorbing model, the prerequisites of microwave electromagnetic parameters and the border curves for a single - layer homogeneous absorbing coating backed by a perfectly conducting plate to produce zero specular reflection are obtained by the steffensen speedup approach to solve the complex transcendental equation

    以吸波模型為依據，用計算機求解了單層均勻各向同性吸波材料的阻抗匹配條件，通過數值模擬得到了吸波材料阻抗匹配時電磁參數邊界曲線的數值模擬等式和阻抗不匹配時寬帶吸波材料電磁參數的合理搭配規則和頻散特性。
  19. Firstly, the multiple modes and dispersion nature of ultrasonic lamb wave are investigated in theory. furthermore, optimization of excitation signal is performed experimentally with the four parameters : the transport mode, the center frequency, the amplitude and the number of the wave ’ s peak value

    本文首先從理論上分析lamb波的多模式和頻散現象，在理論基礎上結合實驗在傳播模式、中心頻率、信號幅值、波峰數等幾個方面對lamb波進行優化。
  20. It shows that when wave propagates along axis direction, the displacements of radial, axis direction and the change of electric field are coupling each other, and there is dispersing phenomenon, and the displacement of circle direction can figure out independently, it has not dispersing phenomenon

    發現當波沿著圓柱殼體軸向傳播時，物質的徑向運動軸向運動和電勢的變化相互耦合，伴有頻散現象但是扭轉運動可以獨立表示，並且同電場無關，無頻散現象。
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