波長精確度 的英文怎麼說

中文拼音 [bōzhǎngjīngquèdù]
波長精確度 英文
accuracy of the wavelength
  • 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...
  • 長 : 長Ⅰ形容詞1 （年紀較大） older; elder; senior 2 （排行最大） eldest; oldest Ⅱ名詞（領導人） chief;...
  • 精 : Ⅰ形容詞1 （經過提煉或挑選的） refined; picked; choice 2 （完美;最好） perfect; excellent 3 （細）...
  • 確 : 形容詞1. （符合事實; 真實） true; reliable; authentic 2. （堅固; 堅定） firm
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 波長 : [物理學] wavelength波長標準 [光學] wavelength standards; 波長測量 wavelength measurement; 波長常...
  • 精確度 : accuracy degree
  • 精確 : accurate; exact; precise
  1. We have developed a high precision wavemeter with an accuracy of 2 10 ^ ( - 8 ) in measuring vacuum wavelength, and a frequency measurement instrument by femtosecond modelocked laser with an accuracy of commercial cs standard

    為了適應研究工作的需要，研製了高精度激光波長計，測量真空波長的準確度可達2 10 ^ （ - 8 ）的量級，同時研製了飛秒鎖模激光的測頻裝置，目前的測量精度可與小銫鐘的精度相同。
  2. By making full use of favourable narrow - band tracing filter character of pll and by combining the merits of dds such as super fine frequency resolution 、 high frequency accuracy 、 very fast frequency hoping with it, the pll / pll + dds frequency synthesizer presents wide band high quality source and super small frequency hoping step. while the electronically tuned filter abates the image interference and notably improves the selectivity. the theorem of frequency synthesizer and center - frequency - fixed filter is simply but adequately introduced first in this paper

    課題中所採用的pll或dds pll鎖相頻率合成方法充分發揮鎖相環良好的窄帶跟蹤濾波特性，並結合dds的高頻率解析度、高頻率精確度和高速頻率捷變等優點，分別實現了系統所要求的高質量寬帶本振源和小步長頻率捷變；採用電調諧選頻技術，則大大改善了接收機的選擇性和抗干擾能力。
  3. The laser has excellent optical performance, including low rin, high smsr, narrow line width and superior wavelength accuracy over operating conditions and lifetime allowing the product to meet all the stringent requirements of today ' s high - channel - count long - haul and metro dwdm systems

    該激光器擁有出色的光學性能，包括低rin 、高smsr 、窄線寬以及在所有操作環境和整個使用壽命期間的出色波長精確度，使該產品能夠滿足現今高度依賴通道的遠程和城域dwdm系統的所有嚴苛要求。
  4. [ br ] the laser has excellent optical performance, including low rin, high smsr, narrow line width and superior wavelength accuracy over operating conditions and lifetime allowing the product to meet all the stringent requirements of today ' s high - channel - count long - haul and metro dwdm systems

    該激光器擁有出色的光學性能，包括低rin 、高smsr 、窄線寬以及在所有操作環境和整個使用壽命期間的出色波長精確度，使該產品能夠滿足現今高度依賴通道的遠程和城域dwdm系統的所有嚴苛要求。
  5. Using the microwave selective heating property for materials, by setup equivalent equation, and first time inducing the electromagnetic field perturbation theory to the design of heating materials for substrate in mpcvd, three temperature distribution modes were established, including temperature distribution comprehensive mode of inhomogeneous plasma, temperature distribution composite mode of composite substrate materials, temperature distribution perturbation mode of composite materials, which ii provided an whole new technology route to the design of substrate heating system in mpcvd and guided the preparation of heating materials for substrate. and then the heating materials for substrate were designed and optimized to obtain large area homogeneous temperature distribution even larger than substrate holder ' s diameter. as an important part, this thesis researched the nucleation and growth of diamond films in mpcvd, systematically researched the effects of substrate pretreatment, methane concentration, deposition pressure and substrate temperature etc experimental technologic parameters on diamond films " quality on ( 100 ) single crystal silicon substrate in the process of mpcvd, characterized the films qualities in laser raman spectra ( raman ), x - ray diffraction ( xrd ), scanning electron microscopy ( sem ), infrared transmission spectra ( ir ), atomic force microscopy ( afm ), determined the optimum parameters for mpcvd high quality diamond in the mpcvd - 4 mode system

    該系統可通過沉積參數的精確控制，以控制沉積過程，減少金剛石膜生長過程中的缺陷，並採用光纖光譜儀檢測分析等離子體的可見光光譜以監測微波等離體化學氣相沉積過程；利用微波對材料的選擇加熱特性，通過構造等效方程，並首次將電磁場攝動理論引入到mpcvd的基片加熱材料的設計中，建立了非均勻等離子體溫度場綜合模型、復合介質基片材料的復合溫度場模型及復合介質材料溫度場攝動模型，為mpcvd的基片加熱系統設計提供了一條全新的技術路線以指導基片加熱材料的制備，並對基片加熱材料進行了設計和優選，以獲取大面積均勻的溫度場區，甚至獲得大於基片臺尺寸的均勻溫度區；作為研究重點之一，開展了微波等離體化學氣相沉積金剛石的成核與生長研究，系統地研究了在（ 100 ）單晶硅基片上mpcvd沉積金剛石膜的實驗過程中，基片預處理、甲烷濃度、沉積氣壓、基體溫度等不同實驗工藝參數對金剛石薄膜質量的影響，分別用raman光譜、 x射線衍射（ xrd ） 、掃描電鏡（ sem ） 、紅外透射光譜（ ir ） 、原子力顯微鏡（ afm ）對薄膜進行了表徵，確立了該系統上mpcvd金剛石膜的最佳的實驗工藝參數。
  6. As the traditional navigation system ca n ' t satisfy the requirements of the autonomous underwater vehicles ( auv ) navigation and position. we study a depthometer - doppler - aided strapdown inertial navigation system ( ddsins ) in combination of the developments of periodic navigation technique and some practical problem posed by the mathematical and variation of output data of doppler, furthermore, the digital simulation and semiphysica test are made to verify the validity of the algorithm, the main research work are as follows : design of the strapdown inertial navigation system of auv

    由於傳統的導航系統很難滿足遠程水下航行器精確導航、定位的要求，本文在充分考慮使用特殊性的情況下，結合國內、外導航技術發展的實際狀況和發展方向，研究了水下航行器組合導航系統的誤差，重點解決了因多普勒輸出數據周期長和周期時變而給導航計算和濾波器設計帶來的問題，並進行了模擬和實物測試，模擬和實物測試結果表明本文所研究的設計方案合理，可以達到某型水下航行器導航、定位需要的精度。
  7. The sources of error in the experiment of measuring wavelength and grating constant with diffraction grating are analysed. the improving method and theory base are also provided

    摘要分析了用透射光柵測波長和光柵常量的實驗中，某些因素對測量結果精確度的影響，並提出了提高測量精確度的方法和依據。
  8. Because mz interferometric optical fiber gyroscope has bigger nonreciprocal phase, the system thermal stability, polarization noise and the error caused by the fluctuation of light source is particular analysed, some effective methods is proposed such as : using the " quasi - white - light " interferometry and the fiber polish technology accurately to control the fiber length, using depolarization light to minish the polarization error, and using temperature control, optical power control and depolarizer to stabilize the output of the light source

    結合mz干涉式光纖陀螺的存在較大非互易相移的特點，著重從其溫度穩定性、偏振噪聲以及光源波動引起的誤差三個方面分析了抑制噪聲、提高檢測精度的方法，提出了：採用「準白光」干涉測量法結合光纖研磨技術精確控制光纖長度差的辦法；採用非偏振光源抑制偏振噪聲的方法；採用溫度控制、功率控制以及消偏器實現穩定化陀螺光源的方法。
  9. Measurement and characterization of surface texture is an important aspect of precision metrology. historically this has involved partitioning a profile into different wavelength regimes referred to as roughness, waviness and form followed by numerical quantization. parameters computed are then inspected for tolerance compliance to ensure a part performs its intended function. this approach is satisfactory when the specification has been carefully determined and the process is stable. however, when the manufacturing process is under development or when instability or modifications to the process invalidate specifications, there is a need to study surface finish parameters in relation to functional performance or process measures. in this context, the problem of surface texture classification and recognition are discussed. advanced techniques developed for this purpose along with applications are presented. also, the techniques discussed here will be useful across large bandwidth, from the characterization of nano scale to traditional micro scale surfaces

    表面結構的測量與特徵描述是精密計量技術的一個重要方面，傳統上包括將輪廓情況根據不同的波長范圍劃分為粗糙度、波紋度和形狀及后續的數字量化.按算得的參數檢查它是否為公差允許，以保證零件執行其指定的功能.當技術特性已經經過仔細確定，並且其過程穩定時，該方法是令人滿意的;但是，當製造過程正在進行中或過程的不穩定、過程變化使技術特性失效時，就需要研究和功能表現及過程評定相關的表面參數.討論了表面結構的分類與識別問題.同時闡述了為此目的而開發的先進技術及其應用.所研究的技術對從納米尺度到傳統的微米尺度的較大帶寬范圍內的表面特徵描述都是有效的
  10. A wide range of the branching ratio can also be achieved for the asymmetric case. using supermode theory, i compared the design results of directional coupler by means of 2d mode and 3d mode and designed 3db directional coupler using 3d bpm and couple mode theory

    實際的設計過程中，考慮到定向耦合器輸入波導和輸出波導部分的耦合影響，圍繞耦合模理論計算結果手動調節耦合區長度，並應用三維bpm來模擬設計，得到耦合區長度，設計了精確的3db定向耦合器。
  11. Recalling high - school or college science, the coating should be quite precisely made to a thickness of 1 4 of the wavelength of light in the coating material

    回想高校或大學的科學課，鍍膜的厚度要求精確，須為在膜層物質中光波波長的四分之一。
  12. Methods : its experimentative conditions, including detected wavelength, fluid medium, disposal of special specimens, linear range of methods, minimum contents, precision, accuracy, currecy and application, have been investigated

    方法：對測定方法中涉及到的檢測波長、流動相、操作方法以及方法的線性范圍和最低檢出量、精密度和準確度等方面進行實驗研究。
  13. Compared with d - shaped fiber, the d - shaped fiber bragg grating index sensor is more precise and reliable because the sensed information is encoded into wavelength, which is an absolute parameter, the output does not depend on the light levels, loss in the connecting fibers and couplers, or source power

    光纖布喇格光柵傳感器以波長偏移和功率變化同時作為傳感度量，由於波長檢測對光功率漲落不敏感，相對于只以功率變化作為傳感度量的傳感器件，具有更高的傳感精度和準確性。
  14. The new system uses short base - line to avoid the long base - line phase illegibility to get the signal arrive angle with higher precision, then use the phase differences without illegibility and the arriving angle to detected the emitter ' s range

    該系統首先通過短基線測角，去除長基線接收機相位模糊，進而獲得更高精度的波達角度；然後通過無模糊的相位差側量值和波達角度估計值確定信號源與觀測站之間的距離。
  15. Research on electromagnetic scattering of complex targets has been received much attention for a long time, the fast inhomogeneous plane wave algorithm ( fipwa ) in this paper performs well in this purpose, and the computation complexity of its multilevel version ( mlfipwa ) is of the same order as the multilevel fast multipole algorithm ( mlfma )

    復雜目標電磁散射研究長期以來廣受關注，本文研究的快速非均勻平面波演算法，可以快速精確的求解任意復雜目標的電磁散射問題，其多層形式的計算復雜度與多層快速多極子相當。
  16. Usually the measuring values of these systems are based on the wavelengths of the incorporated laser sources. hence, in order to ensure that the high potential accuracy of these instruments is achieved, the values of their wavelengths in vacuum must be known

    通常所量得的數值是根據裝置在干涉儀的激光光源的波長所得出的，為確保儀器能達到其潛在的高精確度，必須知道激光在真空中的波長數值。
  17. In this thesis, we used the q - switched nd : yag laser pulse focused by lens to pump the cr ~ ( 4 + ) : mg _ 2sio _ 4 crystal, with the pump laser pulse duration and energy of 30ns and 50 mj separately, and got the laser pulse with center wavelength, pulse duration and energy of 1. 22 m, 8. 2 ns and 10 mj on the best work condition. on the base of zhangguowei s approximation about gain - switching and the parameter of cr ~ ( 4 + ) : mg _ 2sio _ 4 crystal, we calculated the time characteristics of cr ~ ( 4 + ) : mg _ 2sio _ 4 laser pulse with rate equation by numerical method, obtained the conclusion that the laser pulse duration is only related to the pump energy and cavity length : the larger the pump energy is, the narrower the pulse duration is ; the longer the cavity is, the wider the

    本論文採用調qnd : yag脈沖激光通過透鏡聚焦后縱向抽運cr ~ （ 4 + ） : mg _ 2sio _ 4晶體，抽運光脈沖寬度為30ns 、能量為50mj ，在較佳工作條件下得到了中心波長為1 . 22 m 、脈寬為8 . 2ns 、能量為10mj的激光脈沖;並在張國威分析增益開關時間特性的近似法基礎上，結合實際的cr ~ （ 4 + ） : mg _ 2sio _ 4激光器的相關參數，從速率方程出發，用數值計算的方法更為精確的模擬了cr ~ （ 4 + ） : mg _ 2sio _ 4激光器輸出激光脈沖的時間特性，得出了激光脈寬只與抽運能量、腔長有關的結論，即抽運能量愈大，脈寬越窄;腔長越長，脈寬則愈寬。
  18. We have designed a set of ultraviolet probe and holographic interferometer system on " xg - ? " laser facility, where probe wavelength can be short as 0. 308nm. igoring effect of magnetic field, electron density can be measuremented exactly. in this paper, holographic interferometry is interpreted in detail and and the experimental results are presented and analysed

    我們在「星光」裝置上設計了一套紫外超短脈沖激光探針及其全息干涉系統，該系統探針光波長可以短到0 . 308nm ，在這樣的情況下忽略磁場效應可以比較精確地測量等離子體冕區（ 0 . 1n _ o ）電子密度。
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