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standing wave 【物理學】駐波,定波。

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Through theoretical analysis on the behavior of soil - water - system dielectrics , it is proved that the real parts of the dielectric constant under high frequency or microwave can be used to measure soil water content rapidly this method can get a lot of measurement results with high accuracy and wide applicabiiity in addition , the results are seidom affected by the spatiai variation of soil property as a further application of the above result , a soil moisture sensor based on standing wave ratio was developed 概括起來本文的研究內容主要有以下幾點: 1本文通過對土壤介電特性的理論分析,論證了利用高頻或微波段內的介電常數實部來快速測量土壤含水量是一種靈敏度高、適應面寬、受土壤理化特性空間變異影響較小的快速測量方法。為研制開發基于駐波率原理的swr型土壤水分傳感器奠定了基礎。

By analyzing the principle of traveling wave , this paper point out that the traveling wave of the rotational motor generates by two same types and frequencies standing wave superimposition , while the traveling wave of the ring - type motor degenerates by two standing wave of extremely approaches in frequencies 通過分析行波產生的原理,指出旋轉型馬達的行波是由兩個同型同頻的駐波疊加而成,而長環型直線馬達的行波是由兩個模態頻率十分接近的駐波疊加而成。

In order to increase output power of conventional standing wave ultrasonic motors to satisfy the antifriction technique , this dissertation presents a new linear transducer - metallic plate type ultrasonic motor based on the conventional standing wave ultrasonic motor ’ s structure 為提高駐波直線超聲波馬達的輸出功率以滿足減摩的要求,本文在其基礎上提出了一種新型的直線超聲波馬達。

Analytical results proves the existence of the two needed bend standing wave which generate traveling wave in the ring - type structure with two linear portions , and also confirms the existence of traveling wave through the harmony response analysis 采用有限元方法對帶有兩個直線段的超聲波直線馬達進行了分析,分析結果表明長環型結構上存在著產生行波所需的兩個彎曲駐波。

It can operate in traveling wave mode with only the torus in experiment , as well as in hybrid mode of standing wave and traveling wave with the whole engine working , and it can be also used to drive a pulse - tube refrigerator 它不僅可以用于行波與駐波混合型熱聲發動機實驗,還可以單獨進行行波環路實驗及熱聲發動機驅動脈管制冷機實驗。

The causes for the muffler attenuation trough was analyzed by the sound modal analysis and the sound pressure map analysis , and the improvement was put forward with the control measure of the long duct standing wave 用聲模態分析和聲壓分布圖分析的綜合方法分析了消聲器產生消聲低谷的原因,并利用長管道駐波的控制方法加以控制。

We lay undue emphasis on a new type standing wave ring ultrasonic motor which are presented in the dissertation , which characteristic is that three transducer work at the same time and stator is taper 本文設計的重點是設計一種新型的環形駐波超聲波電機,此電機的特點是三個換能器同時激勵、定子圓環帶有錐度。

Time - domain radiation models are brought forward for compromising emanation by applying standing wave dipole model and traveling wave monopole model to problem of electromagnetic information leakage . 2 首次將駐波偶極子模型和行波單極子模型引入信息電磁泄漏機理研究,提出了泄漏發射的時域輻射模型; 2

In chapter 2 , two kinds of physical models , traveling wave monopole model and standing wave dipole model , are set up as well as information theory models 其中第二章建立了行波單極子模型和駐波偶極子模型兩種物理模型;第三章研究了計算機陰極射線管顯示器電子束的電磁輻射。

Instantaneous propagation of the voltage sum of forward wave and backward wave , namely the standing wave , is not standing still except in case of total reflection 傳輸線上瞬時弦波電壓等速傳播之正向波與反向波合成之駐波,除非是全反射,并非如其名稱停駐不前。

Acoustics - determination of sound absorption coefficient and impedance in impedances tubes - part 1 : method using standing wave ratio iso 10534 - 1 : 1996 ; german version en iso 10534 - 1 : 2001 聲學.阻抗管吸聲系數和阻抗測定.第1部分:駐波比法

Using the fresnel matrix method , the standing wave distribution of the vertical - cavity surface - emitting laser ( vcsel ) was designed and analyzed 摘要應用薄膜光學的菲涅耳系數矩陣方法,對垂直腔面發射激光器的駐波場分布設計做了深入的研究。

Cyberspace consists of transactions , relationships , and thought itself , arrayed like a standing wave in the web of our communications 賽柏空間由交易、關系和思想本身構成,它們像一道永恒的波浪,在我們的交流之網上部署著。

Vswr connectors for electronic equipment - tests and measurements - test 25g - impedance , reflection coefficient and voltage standing wave ratio 電子設備連接器.試驗和測量.試驗25g .阻抗反射系數和電壓駐波比

The simulation results show that the growth sequence of the dbrs has important influence upon the standing wave distribution 計算結果表明,分布布拉格反射鏡生長順序對器件內部駐波分布有重要的影響。

It realized multi - octaves broadband , flat intraband gain , low standing wave ratio , long linear range and dynamic range 實現了多倍頻程帶寬、確保帶內增益平坦、駐波小、線性范圍和動態范圍大。

The resulting standing wave is a swirling motions such as might result if we swirled water in a round - bottomed cup 所產生的駐波是一種旋轉運動,它是在我們轉動圓底杯中的水時會產生的現象。

Acoustics - determination of sound absorption coefficient and impedance in impedance tubes - part 1 : method using standing wave ratio 聲學.阻抗管中吸聲系數和阻抗測定.第1部分:駐波比率法

Acoustics - determination of sound absorption coefficient and impedance in impedance tubes - part 1 : method using standing wave ratio 聲學阻抗管中吸聲系數和聲阻抗的測量第1部分:駐波比法