最大發光度 的英文怎麼說

中文拼音 [zuìdàfāguāngdù]
最大發光度 英文
maximum luminosity
  • 最 : 副詞（表示某種屬性超過所有同類的人或事物） most; best; worst; first; very; least; above all; -est
  • 發 : 名詞（頭發） hair
  • 光 : Ⅰ名詞1 （照耀在物體上、使人能看見物體的一種物質） light; ray 2 （景物） scenery 3 （光彩; 榮譽） ...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  1. The electronic temperature, intensities of all lines and continuous spectra gradually increased with the increment of laser energy, and they got to maximum at different laser energy. our results of copper and aluminum show that there are possibly different thresholds of laser energy to electronic temperature and intensities of emission spectra of laser ablated plasma. at the different environmental gas pressure, spatial emission intensity distribution is explained by the competition among " heat reservoir effect ", " confined effect " and " s hadow effect "

    認為cu等離子體羽的發光機制是由電子與粒子的碰撞傳能、電子與離子的復合形成的；隨激光能量的增加， cu等離子體特徵輻射（分立譜） 、連續背景輻射（連續譜） 、電子溫度都出現最大值；結合對al的實驗結果說明：激光燒蝕金屬產生的等離子體，其特徵輻射、連續輻射、電子溫度可能都存在一定的能量閾值；背景氣壓對激光燒蝕等離子體譜線的影響，其機理可以認為是「熱庫效應」 、 「約束效應」及「陰影效應」相互競爭的綜合結果。
  2. Results involved in measuring burst size and latent period of the cyanophage showed that both temperature and sunlight are the important effect factors

    並且，發現當溫度和光照分別為28和2000lux時，吸附率達到最大值為62 . 4 。
  3. Super luminescent led or white heat the largest mobile modular structure up to six switches for each contact nema 4x and ip65 leakproof water

    超亮度led或白熾發光最大機動性的模塊化構造每個開關多達6個觸點
  4. The angular extent in a specified plane which contains all the radius vectors of the polar curve of luminous intensity having lengths greater than a specified fraction of the maximum

    在某一平面上，一定角寬范圍內所包含的光強極軸曲線上的矢徑長度均大於其最大值的某一特定比例，這種情況定義為光束的發散。
  5. Niche breadth of four dominate populations at three age groups was studied by the methods of resource utilization ability and ratio. the result shows that : symplocos sectchuanensis is a typical gengeration species whi ch resource utilization ability is strong, and distribution is wide. meanwhile, go rdonia acuminata, castanopsis fargesis and pinus massoniana specialized at some d egree in resource utilizationm, their distribution is limited. especially, the ju venile of pinus massoniana specialized outstandingly. with the devlopment of pinu s massoniana, which is the pioneer population in mt. jinyun, the environment become s unfit to it ' s juvenile. it turns to needle and evergreen broad - leaves mixed fo r est. because the tolerance toward shading of gordonia acuminata is lower than tha t of castanopsis fargesis, gordonia acuminata will be substituted by castanopsis fargesis and other evergreen broad - leaves species are the edificators. the popul ation ' s ability of resource utilization is the inner factor of population distri bution and community succession. the distribution of light and the concentrate of nutrient ( such as n ) is the outer factors of community succession

    對縉雲山森林植被的4個優勢種群3個年齡級生態位寬度進行了研究.結果表明，川灰木利用資源的能力最強、分佈廣，為典型的泛化種.大頭茶、栲樹、馬尾松對資源的利用在一定程度上特化，分佈上有一定的局限性.馬尾松的中齡組與幼齡組特化現象十分顯著.縉雲山森林植被的先鋒種馬尾松的發展，導致環境的改變不適于其幼齡個體的生長，群落演替到針闊葉混交林階段，最後發展為以栲樹等為建群種的常綠闊葉林.種群的資源利用能力，是種群分佈與群落演替的內在原因，光因子和營養元素（如n ）是群落演替的主要外部動力
  6. The laser power is detected through the pd ’ s movement across the faculous region. when the value of the peak value of laser power is got, the power of the facular boundary points can be found according to definition of the facular boundary such as “ 1 / e ~ 2 ” theory. then the equation of the facular boundary can be made fitting by using the least square method, and calculate the beam divergence at last

    採用兩個光電探測器分別檢測光束不同高度上的兩個光斑，在確定光斑中心最大光強值后，根據光斑截面尺寸的1 / e2定義，得到光斑截面邊界點的光強值，並以其為標準判定光斑截面的邊界點，對探測到的邊界點通過最小二乘法進行擬合，得到橢圓光斑截面的方程，根據空間幾何關系求出發散角。
  7. According to the guidline, two nd : yag lasers have been designed and set up, one is end - pumped by lower output power ld using a selfoc micro lens, and the other is end - pumped by high output power ld using a pair of lenses are designed, and the characteristics such as output power and power stabilization of both solid - state lasers are investigated. thirdly, when an empty liquid crystal cell is inserted in the cavity of the nd : yag laser pumped by high power ld, the laser can operates in single axial mode. finally, according to the relationship between the laser output power and the longnitudinal a ld - end - pumped nd : yag laser sensor for displacement measurement has been investigated theoretically and demonstrated experimently, the results indicate that when the mean radius of pumping inside the laser cavity is far less than that of the oscilating laser mode, the exponential of the output power is a gauss function of the longitudinal positon of focused spot of ld pumping beam, both the measurement range and the sensitivity are dependent on the incident pumping power, as the incident pumping power is increased, the measurement range is enlarged and the sensitivity is improve d

    本文首先介紹了ld泵浦nd ： yag激光器的發展狀況、主要特性及其應用，從四能級速率方程出發，推導了ld泵浦nd ： yag激光器的閾值、輸出功率和斜效率的表達式，並簡述了激光器的工作原理、結構型式和倍頻方法；其次，以空間相關的速率方程為基礎，提出了ld端面泵浦nd ： yag激光器的設計方法，給出了一定泵浦耦合方式下，振蕩光模尺寸、最佳輸出耦合率、泵浦光模尺寸、泵浦光焦斑位置等參數的選取依據，以此為依據，設計了自聚焦透鏡耦合小功率ld泵浦nd ： yag激光器和透鏡組耦合高功率ld泵浦nd ： yag激光器，對激光器的輸出功率和功率穩定性等特性進行了實驗研究；再次，在帶尾纖輸出的高功率ld泵浦nd ： yag激光腔內插入一隻空液晶盒，觀察到了激光器以單縱模運轉；最後，根據泵浦光焦斑端面位置對激光輸出功率的影響規律，提出了ld端面泵浦nd ： yag激光位移傳感新方法，並進行了理論和實驗研究，研究結果表明：當激光晶體內泵浦光平均光斑半徑遠小於振西安理工大學碩士學位論文蕩光束腰半徑時，激光輸出功率的自然指數與泵浦光焦斑的縱向位置成高斯變化規律，測量范圍和靈敏度依賴于泵浦功率，隨著泵浦功率的增加，測量范圍擴大，靈敏度提高，當端面泵浦功率為7 . 24w （最大輸出功率為1 . 926w ）時，激光位移傳感器的測量范圍和靈敏度分別是13 . 045mm和0 . 148mw / pm 。
  8. Results show that, at any frequency, the mbsl field changes with the ultrasonic intensity, and the thresholds of ultrasonic pressures are increased with the ultrasonic frequency. the reason is that, the ultrasound with higher frequency needs higher pressure to make the bubbles provide enough energy to dissociate the water molecules

    超聲的驅動頻率的大小影響氣泡的膨脹比（氣泡在超聲作用下膨脹的最大半徑最小半徑） ，進而影響氣泡爆破時產生的溫度，導致不同頻率條件下氣泡地聲致發光閾值不同。
  9. She stood, her thin arms hanging at her sides, and her scarcely outlined bosom heaving regularly. she held her breath, and gazed before her with shining, frightened eyes, with an expression of equal readiness for the utmost bliss or the utmost misery

    她站在那個地方，低垂著自己一雙纖細的手，她那稍微隆起的胸脯均勻地起伏，她幾乎屏住呼吸，一對吃驚的閃閃發光的眼睛注視著前方，她那表情意味著她對最大的欣悅或極度的悲哀在精神上都有所準備。
  10. By calculated judd - ofelt parameters of the npre - 1 glass and luminescence dynamics equation, the author has get the changing curve about light intensity near 1540nm with the increase of er doped concentration. it was observed that the light intensity is the strongest when er doped concentration is 20mol % and the concentration - quenching phenomenon takes place after the concentration is bigger than 20mol %

    5 ）通過建立發光動力學方程，利用j - o計算得到的參數，得出npre - 1樣品1540nm處發光強度隨er3 +離子摻雜濃度的變化規律，看到er3 +離子摻雜mol濃度為20 %時發光最強，大於這個濃度后就發生了濃度猝滅效應。
  11. The influence of msfvw bandwidth on the diffraction efficiency is also considered. for the nonuniform bias magnetic field of u - type parabola profile, when the msw frequency is less than the cut - off frequency at the edge of mo film, the effective mo interaction length reduces. the edge cut - off frequency is determined by the maximum of the nonuniform field

    對于拋物型分佈（開口向上）的偏置磁場，當激發靜磁波的rf頻率小於邊緣截止頻率時，磁光作用的有效長度減小（與靜磁波頻率有關） ;邊緣截止頻率由不均勻磁場的最大值決定，靜磁波的下限截止頻率由不均勻場的最小值確定。
  12. Point diffraction interferometer - a physical idea, is invented by smartt and strong in 1972, advanced by smartt and steel, and used to test astronomical telescope, it has simple structure and has not special demand to source. recently. with the development of fiber ' s manufacture and coupling technology. the simple modern fiber ' s center is smaller than before, this make it possible to progress fiber point diffraction interferometer ( pdi ), in addition to test convergent wavefront, it can test the reflective concave. the excellence of pdi is that it does not need standard mirror. in intereference testing, the standard mirror is the main reason which limit the improvement of precision, pdi can avoid difficulty to provide the wide future for high precision testing. pdi, which produce the standard sphere wavefront, is an instrument which realize the phase shifting with piezoelectric transducer ( pzt ), and collect the interferogram with ccd, in this paper, a adjusting methord is described, then data processing is obtained

    點衍射干涉儀這一物理思想，早在1972年smartt和strong就已發明，由smartt和steel做了進一步發展，並成功的用於檢測天文望遠鏡，它結構簡單，對光源沒有特殊要求，近年來，由於光纖製造工藝以及耦合技術的發展，單模光纖纖芯不斷縮小，為光纖點衍射干涉儀得以發展提供了前提條件，該干涉儀由激光照明，除了檢測會聚波前外，還可以用來檢測反射凹球面，進而應用到單個面形的檢測；另外，光纖點衍射干涉儀最大的優點是不需要標準鏡，在干涉檢測中，標準鏡是檢測精度受限的很大原因，光纖點衍射干涉儀能繞開這一難度，為進行高精度的光學檢測提供了廣闊的前景。
  13. 2 the axial luminous intensity of daylight signalling lamps should reach at least 90 % of the maximum luminous intensity

    白晝信號燈的軸向發光強度至少應達到最大發光強度的90 % 。
  14. 3 the luminous intensity of daylight signalling lamps should have its maximum in the centre of the luminous intensity distribution. it should decrease evenly from the centre of luminous intensity distribution

    白晝信號燈的發光強度最大值應位於發光強度范圍的中心，並應均勻地自中心向發光強度范圍內減少。
  15. By analyzing and synthesizing the experimental results many optimized experimental parameters are achieved. 4. in order to value the cleanliness of super - smooth surface before and after laser cleaning rapidly and precisely, a software is developed to automatically value it by processing the surface images, which can present key parameters about the surface cleanliness, such as maximal contaminant particle size, the total particle number per unit, the contaminant area per unit, etc

    超光滑光學基片表面激光清洗的機理和試驗研究西北工業大學碩士學位論文4 .對試驗中基片清洗前後sem照片進行統計分析，提取了基片表面上雜質微粒的圖像特徵，結合計一算機圖象處理技術，開發了表面清潔度自動評價軟體，實現了對超光滑基片表面上吸附的污染微粒進行自動識別和特徵分析，包括微粒的尺寸分佈、單位面積的微粒數、最大的微粒尺寸等重要參數。
  16. In this thesis, we realize the web - based rtu in telecontrol system for electrical railway systems by using new techniques of computer, communication, and existing the resources of super - speed fiber optic cable that we have already had. besides, we also realize the multi - receiver of the rtu real - time information and the consistency of the information ; the bottleneck problem of the communication and " information solitary island " can also be solved. improving the consistency and real - time performance of information transmission, sending all kinds of information more accurate, safety and faster to the places where the information is required and receiving permitted, realizing larger scope information sharing are all newly and highly anticipated projects in the area of supervise and control

    最大程度的結合新型計算機通信、網路及軟硬體技術，利用目前已經具備的高速光纜通道資源，實現scada系統被控端基於web方式的廣泛聯網，可以解決rtu信息一發多收、一致性，通信瓶頸及『信息孤島』等問題，提高信息傳輸的實時性和一致性，把各種信息更加準確、安全、快速的送到所有需要並被允許的地方，實現更大范圍的信息共享，是目前監控領域的一個嶄新而又備受關注的課題，本文首先綜述了電氣化鐵道scada （電鐵scada ）系統的三大組成部分：調度端、被控端和通信通道的發展概況，闡述了傳統模式的電鐵遠動系統的弊端所在，接著提出了基於web模式的電鐵scada系統硬體結構設計。
  17. By use of g. d. shen ' s tunneling cascade theory we have fabricated high performance and high power tunneling cascade ingaas / gaas / algaas 950nm / 990nm double wavelength strained quantum well lasers on the basis of former tunneling cascade high power lasers and high brightness light emitting diodes. the lasers " two peak wavelength are 95 ? nm and 990 ? nm. el spectrum ' s fwhm is 3nm

    在以往隧道級聯大功率應變量子阱激光器及高亮度發光管的理論研究與實驗的基礎之上，採用沈光地教授提出的隧道級聯思想，成功研製出基於ingaas gaas algaas材料的高性能大功率隧道級聯950nm及990nm雙波長應變量子阱激光器，激射波長分別為952 2nm和990 2nm ， el譜的譜線寬度約3nm ，未鍍膜器件單面最大輸出光功率可達2w以上，閾值電流最低達120ma 。
  18. The optimized experimental conditions are determined and the densities of some elements in the mental alloy standard samples are measured. the experimental results shows that the spectral intensity of the plasma enhances significantly with the increase of the operating voltage and the power density. ( 1 ) to the steel ally sample, the emission intensities of the spectra reach to the maximum values when the laser operating voltage is 1600v and the argon pressure is 600 torr. under the same pressure, the spectral intensity of the plasma in the argon atmosphere is stronger than that in the air. when the argon pressure is 320 to rr, the signal - noise ration is about 5 times than that which the argon pressure is 700 torr, but the temperature of plasma is less about 1000k

    （ 1 ）對于光譜標鋼準樣品，當激光器工作電壓為1600v 、氬氣壓力為600乇時，譜線強度達到最大，並且在相同壓強下，氬氣中的等離子體與空氣中的等離子體相比，其輻射強度明顯增強；氬氣壓力為320乇時的譜線信背比約為600乇條件下的5倍，而等離子體溫度卻下降了近1000k ，即等離子體溫度隨環境氣壓的增大而增大；當激光束的焦斑在樣品表面上下移動時，激光誘導量、等離子體的激發溫度、譜線強度都呈不對稱性分佈，其最大值對應的焦斑位置都位於樣品表面之下0 . 4mm左右。
  19. The fluorescence spectrum ( fls ) of lra excited at 280nm and 295nm showed a maximum peak at 338nm. the characteristic peak of tyr did not exist, and it showed that the fluorescence energy of tyr was transformed to trp and strength the fluorescence of trp. when lra was excited at 295nm, the fls showed a maximum peak at 338nm, the max of fluorescence emission spectrum blue - shifted more than 10nm compared with the max of free tyr ( 348nm )

    Lra的熒光光譜研究表明在激發光波長為280nm時，其最大熒光發射峰在338nm處，熒光光譜未見有酪氨酸（ tyr ）殘基的發射峰，表明tyr殘基的熒光基本上通過能量轉移到trp上，使熒光強度增強，在激發光譜為295nm時，其最大熒光發射峰338nm ，比游離trp的最大熒光發射峰（ 348lun ）藍移了近10nln ，說明trp周圍的極性較弱，處于疏水的微環境。
  20. The results showed that : the ultraweak photon emission counts of each grain during grain - filling period appeared a curve with single apex, the count was maximum when the grain was completely filled in and the color of grain was from green to yellow ; the intensity of ube showed a downward trend ; it is possible to select good varieties of rice with stronger grain - filling ability if this technique is used, but more experiments is needed

    實驗結果表明：在整個灌漿過程中單粒發光量呈單峰曲線，在籽粒全部充實並且顏色由青轉黃時，發光量最大；發光強度呈遞減趨勢；運用該技術有可能進行水稻不同品種間的比較和品種灌漿力強弱的篩選。
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