標準波長計 的英文怎麼說

中文拼音 [biāozhǔnzhǎng]
標準波長計 英文
standard wavemeter
  • : Ⅰ名詞1 [書面語] (樹梢) treetop; the tip of a tree2 (枝節或表面) symptom; outside appearance; ...
  • : Ⅰ名詞1 (標準) standard; guideline; criterion; norm 2 (目標) aim; target Ⅱ動詞1 (依據; 依照)...
  • : 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;...
  • : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
  • 標準 : (衡量事物的準則; 榜樣; 規范) standard; criterion; benchmark; pip; rule; ètalon (衡器); merits
  • 波長 : [物理學] wavelength波長標準 [光學] wavelength standards; 波長測量 wavelength measurement; 波長常...
  1. Generally, the designed channel spacing of itu - t standard in wdm systems is from 0. 8nm to 1. 6nm, which is much larger than the spacing required by actual communication bandwidth. for example in lightwave transmission systems, a sghz channel occupies only 0. 04nm at the wavelength band of 1. 55 n m. thus, most of the bandwidth in the actual transmission systems may be wasted

    Itu - t中wdm系統設的通道間距為0 . 8nm - 1 . 6nm ,這遠遠大於實際使用的通道帶寬,例如一個帶寬為5ghz的通道在1 . 55 m段只佔據了約0 . 04nm的范圍,因而導致大部分的帶寬被浪費。
  2. This paper applies ittc single - parameter ocean wave spectrum to simulate a random long - crested ocean wave according to statistics superposition theory and real - time simulate disturbance on the ship by random wave. it simulates roll and pitch of the ship in random wave in the time domain and gains roll angle ( t ) and pitch angle ( t ) signal of ship rolling movement

    本文根據統疊加理論,採用ittc單參數海浪譜模擬模擬實際的隨機海浪,進而實時模擬隨機海浪對船舶的隨機擾動,對船舶在海浪中的橫搖和縱搖運動進行了時域模擬,得到船舶搖蕩運動的橫搖角信號( t )和縱搖角信號( t ) 。
  3. The spectral and group delay characteristics are studied and the potential uses of this type of grating for wavelength selection and dispersion compensation are discussed. a novel scheme of oadm configuration based on linearly chirped moir fiber gratings is proposed. we have designed a lcmfg to compensate dispersions for eight channels at the same time

    在此基礎上,提出了一種新型的基於線性啁啾moir光纖光柵的光分插復用器( oadm )的結構設方案;並設出一種中心、相鄰中心間隔都符合itu規定的dwdm的基於線性啁啾moir光纖光柵的多通道色散補償器件。
  4. 1550nm is chosen as the work wavelength, cassegrain transmitting - receiving antenna as the optical antenna of the system through the elucidation of how to choose the work wavelength and optical antenna of comm - unication system. the structure and theoretical design parameter of apt sub - system have been presented through the discussion of the optical signal power estimation of apt sub - system, beam divergence angle, pointing error, and error signal extraction. compared with existed optical wireless communication system, the design scheme proves applicable

    通過對通信系統工作選擇、光學天線選擇等闡述,選擇了1550nm作為系統工作、卡塞格倫( cassegrain )收發合一天線作為系統光學天線;通過對apt子系統功率測算、束散角和瞄誤差、誤差提取信號等的討論,給出了apt子系統結構和理論設,並將其與現有的光無線通信系統進行比較,說明該設方案是可行的。
  5. Biology, etc. owing to many merits has not yet been used to measure parameters of gratings. the paper researches on the subject in view of current lack of it. the main tasks of the paper include : analyzing ellipsometric characteristics of gratings in detail with vector diffraction theory and ellipsometrics ; devising a reflective quarter wave plate at normal incidence according to some ellipsometric characteristics ; making use of normal simplex algorithm during ellipsometric inversion of gratings parameters, inversing ellipsometric parameters with gaussian noise of different standard deviations to simulate actually measured values with examples of isotropic metallic and anisotropic step gratings and testing that ellipsometry about gratings parameters is feasible with the range of certain precision ; discussing choice of incidence angle at length

    本論文的主要工作包括:結合光柵的矢量衍射理論和薄膜的橢偏理論,詳細分析了光柵的橢偏特性;並且根據一些橢偏特性設出一款正入射反射型單1 4片;在光柵參數的橢偏反演中,引入正單純形法作為反演演算法,分別以各向同性的正弦形金屬光柵和各向異性的階梯型光柵為例,在橢偏值的基礎上加入不同偏差的高斯噪聲來模擬實際的橢偏測量值進行反演,在一定精度范圍內得出滿意的光柵參數,說明光柵參數的橢偏測量是可行的;還就入射角的選取問題進行了一定的探討。
  6. In fact, the difference is the how to expert the function of money. to get the truth and integrate the different ideas, by studying the statistics from 1953 to 2001, there have a conclusion that the length and the trend of period are similar. during the 48 years, by the standard of 10 %, there are six periods to money supply and economic growth and the periods are correspondence, especially the period of money lag the period of economic growth one year

    為了澄清這方面的問題,本文對1953年至2001年中國貨幣供應動周期和經濟增動周期的周期、動趨勢和幅進行了對比研究,發現在整個48年間,按幅超過10的量,經濟增和貨幣動都可分為六個周期,並在周期、動趨勢和幅上呈現出一定的對應性,且貨幣動周期呈現出滯后經濟周期的特性。
  7. Standard test method for wavelength accuracy of spectral bandwidth fluorescence spectrometers

    光譜帶寬熒光分光精密度的試驗方法
  8. Secondly, basing on the theory of on - off gain of small signal, the raman gain coefficient for frequency shift between 0. 5 and 20 thz of standard sigle mode optical fiber is measured by pump - probe method through a super luminescent diode ( sld ) as a broadband small signal probe source. thirdly, numerical simulation analysis of gain characteristic of raman fiber amplifier for c band wdm signal light is made according to the raman gain coefficient of the fiber measured before through target and four rank runge - kutta method. at the invariability of wavelength and maximum power of each of two pumps, schematic of powers of two pumps for best flatness on c band wdm optical gain was found out, at the same time, the factors of resulting in gain saturation is analyzed, too

    本文首先應用經典的電磁理論對拉曼光纖放大器的工作機制進行了分析,然後,根據小信號理論推導出的開關增益求出了光纖拉曼增益系數的表達式,採用泵浦-探測的方法,利用超輻射激光二極體( superluminescentdiode簡稱sld )作為探測光源,測量了所用單模光纖頻移為0 . 5 - 20thz的拉曼增益系數,之後根據所測得的光纖的拉曼增益系數譜對應用該類光纖構成的放大c段wdm光信號的拉曼光纖放大器的增益特性採用打靶法和四階龍格- - -庫塔進行了數值算,在給定了兩個泵浦光源的和最大功率后,找出了反向泵浦情況下使c段wdm光源增益最平坦的兩個泵浦的各自最佳功率,同時也分析了導致信號光飽和的原因。
  9. The main results of this paper are as fellows f 1 ) illtroducing the ultrasonic technology to the rigid measurement, successful1y exploits the practical small intellectualized ultrasonic device of measuring rigidity by applying mechanical technology, electronic technology and computer science 2 ) reading clearcf displaying more various, applying more information, being easiest to accept by user because of adopting liquid crystal display ( lcd ) 3 ) theorizing the mathematical model between the signal of frequency and the rigid value on the device, possessing very importan practical significance 4 ) optimizing the every parts of the device, achieving the goals of lower wastage of energy, smaller, lighter and inexpensive 5 ) taking the measure to reduce the wastage of energy and adopting reasonable management in power supply for the device, making the device skimp more energy, prolonging the life - span of battery 6 ) utilizing the interface of rs - 232, discussing the communication between the ultrasonic device of measuring rigidity and computef, and also forecasting the foreground of advanced exploitation by user

    本文工作的主要成果是: 1 )將超聲技術引入零件表面硬度的檢測當中。應用機、電、算機技術,研製成功較為實用的小型智能超聲硬度檢測儀2 )採用lcd ( liquidcrystaldisplay )液晶顯示,使讀數更清晰、顯示多樣化、信息量多、易於為用戶接受3 )在理論上建立了該系統的頻率信號與硬度值的數學模型,具有非常重要的實踐意義4 )對各元器件進行優選,達到低能耗、體積小、重量輕、價格便宜等目的5 )採取措施降低整個系統的能耗並對系統的供電進行了合理的管理,使其進一步達到低能耗,延了電池的使用壽命。 6 )利用rs - 232介面,討論了該超聲智能硬度測量儀與系統機進行通訊以及用戶進行二次開發的前景
  10. This paper first research on main technologies used by avs standard, which include prediction, transform, quantization, in - loop filter, and entropy encoding, and then focus on the 2d - vlc entropy coder of avs, which is context - based adaptive coder. this encoder operates on run - level pair, and it uses the type of current block and value of current coefficients to switch vlc code - table. these tables are designed according to the distribution of transformed coefficients, and this way is much better than using only one table to code all residual coefficients in one 8x8 block

    本文首先詳細研究了avs的核心技術,包括預測編碼、變換量化、環路濾器以及掃描和熵編碼等,之後重點研究了avs中使用的基於上下文的2d - vlc變編碼方法,這種方法編碼的是( run , level )數對,同時根據當前編碼塊的類型和殘差系數這兩種上下文信息來切換碼表,這些碼表是預先根據變換系數在不同位置的分佈信息設好的,這樣要比只使用一個變碼表來編碼塊內所有位置上的殘差系數的壓縮效果要好得多。
  11. In accordance with the recommendation for the practical realization of the above definition of the international committee of weights and measures, the laboratory maintains the metre through the wavelength of the 633 nm radiation from an iodine - stabilized helium - neon laser

    按國際量委員會對實現米定義的建議,本所透過碘穩頻氦、氖激光器放出633nm的幅射以達至擁有米的
  12. The standard equipment for measuring the intensity of uv ultraviolet radiation at different wavelengths needed for calculating the uv index is the

    算紫外線指數需要量度不同的紫外線強度,進行這種量度的最儀器是
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