wavelength standard 中文意思是什麼

wavelength standard 解釋
波長標準
  • wavelength : 【無線電】波長。
  • standard : n 1 標準，水準，規格，模範。2 旗；軍旗，隊旗；【徽章】標幟，標記；旗標，象徵。3 【植物；植物學】...
  1. Short - wavelength perimetry in diagnosis of early glaucoma : comparison with standard automated perimetry

    黃視野計與標準白色視野計檢測早期青光眼的敏感性比較
  2. 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。
  3. And more aperture extension is achieved in this novel esprit - based two - dimensional angle estimatio n scheme using a uniform rectangular array of vector hydrophones spaced much farther apart than a half - wavelength. this proposed scheme and the attendant vector - hydrophone array outperform a uniform half - wavelength spaced pressure hydrophone array with the same aperture and slightly greater number of component hydrophones by an order of magnitude in estimation standard deviation

    結合實際的應用情況，對矢量水聽器構成的陣列進行了初步的探討，利用本文前面部分所分析的基於單矢量水聽器的方法，實現了陣元間距突破半波長上限的局限，並解決了角度估計的循環模糊問題，以較小的硬體代價和運算代價實現陣列孔徑的擴展，提高估計精度。
  4. 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標準中wdm系統設計的通道間距為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波段只佔據了約0 . 04nm的波長范圍，因而導致大部分的帶寬被浪費。
  5. The laboratory can provide calibration service for the measurement of the wavelength of any laser having a nominal wavelength of 633 nm. calibration is performed by comparing the wavelength of the laser under test with the wavelength of the standard iodine - stabilized helium - neon laser of the laboratory

    本所可為波長標稱值為633nm的激光器提供波長測量服務。被測試的激光波長將與本所的標準碘穩頻氦氖激光器的波長比對而進行校正。
  6. Standard test method for determination of trace metals in petroleum coke by wavelength dispersive x - ray fluorescence spectroscopy

    利用波長色散x射線熒光光譜學測定石油焦中痕量金屬的標準試驗方法
  7. Standard test methods for chemical analysis of ceramic whiteware materials using wavelength dispersive x - ray fluorescence spectrometry

    使用波長色散x射線熒光光譜法進行白色陶瓷材料化學分析的標準試驗方法
  8. Standard practice for testing variable - wavelength photometric detectors used in liquid chromatography

    液相色譜用可變波長光度探測器試驗的標準規程
  9. Standard test method for wavelength accuracy of spectral bandwidth fluorescence spectrometers

    光譜帶寬熒光分光計的波長精密度的標準試驗方法
  10. Standard practice for correction of spectral line overlap in wavelength - dispersive x - ray spectrometry

    波長色散x射線光譜測定中譜線重疊修正的標準規范
  11. Guidelines for the preparation of standard routine methods with wavelength - dispersive x - ray fluorescence spectrometry

    波長散射性x射線熒光光譜分析的標準常規用法的制定指南
  12. Standard wavelength or customer specify, low insertion loss, different package optional. optional connector type

    標準波長或客戶指定，低插入損耗，不同包裝可選.可選連接器類型
  13. 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-探測波的方法，利用超輻射激光二極體（ superluminescentdiode簡稱sld ）作為探測光源，測量了所用標準單模光纖頻移為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波段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- - -庫塔進行了數值計算，在給定了兩個泵浦光源的波長和最大功率后，找出了反向泵浦情況下使c波段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。
  14. Standard practice for determining the activation spectrum of a material wavelength sensitivity to an exposure source using the sharp cut - on filter or spectrographic technique

    用銳截止-打開濾波器或光譜方法測定材料激活光譜
  15. Standard practice for analysis of water - formed deposits by wavelength - dispersive x - ray fluorescence

    用波長色散x射線熒光法作水沉積物分析標準操作規程
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