波長最大值 的英文怎麼說

中文拼音 [zhǎngzuìzhí]
波長最大值 英文
wavelength of maximum
  • : 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;...
  • : 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
  • 波長 : [物理學] wavelength波長標準 [光學] wavelength standards; 波長測量 wavelength measurement; 波長常...
  1. Conclusions show the post and telecommunications " inductivity is least which means this industry is most likely a bottleneck to nation economy ; analysis of the production inducing coefficient shows that the post and telecommunications is a consumption - relying industry ; the change of production value of post and telecommunications spreads most to the second industry, then the tertiary industry, the primary industry ; the change of price of post and telecommunications spread most to the tertiary industry, then the secondary industry, the primary industry

    得出郵電業感應度系數小,其瓶頸地位突出;對生產誘發系數的分析得出郵電業是消費依賴型產業;郵電業的產,對第二產業的產及程度強,其次是第三產業,第一產業;郵電業價格的變化對第三產業的價格及程度,其次是第二產業,第一產業。見第五章。
  2. It starts with zero and grows to a maximum slightly behind the wave front.

    它從零開始,並在稍後于陣面處增
  3. In this paper, the contrast of original image is enhanced by nonlinear transformation based on the characteristics of grain image ; after comparing several methods of threshold segmentation and analyzing their performance and applicability on grain image, the adaptive threshold segmentation based on gradient image is presented ; the noise of binary image is reduced with morphological filter, the hollow in binary image is filled in and a recognition algorithm is designed to remove agglomerate particle ; on the basis of mathematical morphology two methods are adopted to segment agglomerate grains that are not agglomerated tightly ; the parameters of size and shape, perimeter, area, diameter, complexlity, longest feret diameter, shortest feret diameter etc, are extracted. this technique is applied in measurement of pearl powder ' s particle size

    本文根據粒度圖像的特點,採用非線性對比度增強處理改善顆粒顯微圖像的對比度;對多種閾分割方法進行比較,分析了它們的性能和用於粒度圖像的適用性,在此基礎上提出了一種基於梯度圖像的動態閾分割方法;對獲取的顆粒二圖像進行形態濾和空洞填充,設計了識別演算法去除凝聚體;對重疊不太嚴重的粘結顆粒採用了兩種基於數學形態學的分割演算法;提取了周、面積、粒徑、復雜度、feret徑、短feret徑等小和形狀特徵參數,對珍珠粉等粉體粒度進行了測量。
  4. This isi series oscillation has following characters : ( 1 ) long term cycle duration, whose duration of most oscillations ranged from 3 0 - 120ms, so we called it slow wave oscillation ; ( 2 ) large amplitude of oscillation, the minimum isi is about 2ms while the maximum is beyond 40ms, which suggested that the firing frequency vary from several tens to hundred hz ; ( 3 ) abrupt turn always occurs during the continuous change in isi, this turn is called inflexion temporarily

    該振蕩有下述特徵: ( 1 )振蕩周期較,多數在30 ? 120s范圍,故稱慢振蕩; ( 2 )振蕩幅度較,其isi振蕩在zms左右,可達40ms ,表明放電頻率可在幾十到幾百k范圍內變動; ( 3 )在isi連續變化過程中往往出現突然轉折,暫稱其為拐點。
  5. The maximum of instantaneous global radiation is beyond 1000w / m2 and the ten - days average intensity is 338. 90w / m2 because of high atmospheric transparency over semi - arid rainfed agriculture region of loess plateau between june and august. global radiation, reflected global radiation and surface long wave radiation emerge the characteristic of daily variations on a typical clear day and cloudy day, whereas atmospheric long wave radiation has not this characteristic. meanwhile, net radiation, latent heat flux sensible heat flux and soil heat flux appear the same characteristic as the mean daily variations above spring wheat field and bare soil on a typical clear day and cloudy day

    黃土高原半乾旱雨養農業區夏秋季氣透明度較高,晴天地面的總輻射瞬時均超過1000w m ~ 2 , 6 8月總輻射旬平均強度為338 . 90w m ~ 2 ;典型晴天和陰天總輻射、反射輻射、地表輻射均表現出明顯的日變化特徵,而雨天沒有明顯的日循環規律;無論是晴天、陰天還是雨天,輻射基本沒有明顯的日變化規律。
  6. Based on the spectral irradiance measured with the sun - atmosphere ultraviolet spectrum radiometer ( sauvs ) developed by the institute of atmosphere physics and the changchun institute of optics and fine mechanics, chinese academy of sciences, measuring the direct and scatter irradiance spectrum of ultraviolet waveband which arrives in beijing global surface, giving a method of retrieving the aerosol optical depth ( aod ) and put up with primary results that exponential function can fit the retrieval results according to its visibility, putting forth different coefficients and functions on variable visibility, also giving a primary analysis on the aod in dust - storm day and some contrast between sun - day and dust - storm day, analyzing the ratio between scatter and total irradiance, and its relationship with atmosphere mass and total atmosphere optical depth, lastly contrasting with the survey results by aeronet beijing station, the results of retrieval is in reason, this work gives some help in researching the co - effect of aerosol - radiance - climate and makes preparation for further survey on the radiance characteristics of dust

    利用中國科學院氣物理研究所與春光學精密機械研究所合作研製的太陽?氣紫外光譜輻射計( sauvs ) ,測量到達北京地表的太陽直接和散射紫外光譜輻射,導出了氣氣溶膠的光學厚度。初步結果表明:北京紫外氣氣溶膠的光學厚度在絕部分情況下隨的增加而單調減小,用指數函數可以較好地擬合反演結果,統計得到了三個水平能見度狀況下擬合函數的系數和公式表達式;初步分析了揚沙、浮塵、沙塵暴天氣條件下氣溶膠光學厚度的特點,並與一般晴朗天氣條件下的氣溶膠光學厚度特點做了比較分析;分析了太陽紫外譜輻射中散射輻射與氣質量、氣總光學厚度的定性關系和定量表達式;後與全球氣溶膠監測網路( aeronet )北京站的資料做比對,表明反演結果基本合理。
  7. 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,當激發靜磁的rf頻率小於邊緣截止頻率時,磁光作用的有效度減小(與靜磁頻率有關) ;邊緣截止頻率由不均勻磁場的決定,靜磁的下限截止頻率由不均勻場的確定。
  8. In this thesis, first, we present the theory of sess system, the generation of the sess spreading code and its characteristics and the acquisition theory of conventional spread spectrum communication system. an efficient acquisition scheme based on periodically transmitting the synchronization head, which is composed of binary chaotic codes, using the matched filter and automatic decision threshold - level control based on a so - called constant false alarm criterion for sess system is present. the acquisition model of sess system is built and simulated in the awgn channel, the raleigh fading channel and imulti - address interfere condition

    本文首先概述了自編碼擴頻通信的原理、自編碼擴頻序列的產生方法及其特性和擴頻通信系統編碼同步的理論,然後針對自編碼擴頻通信系統提出了擴頻序列捕獲方案:周期性地加入混沌序列同步碼,並採用恆虛警率匹配濾器捕獲法;在加性白高斯噪聲通道、瑞利衰落通道和多址干擾情況下進行了模擬,分析了各種捕獲性能:在選擇性能優的混沌序列、適當的序列度、虛警概率及門限的情況下,可以獲得較短的捕獲時間和較的捕獲概率。
  9. 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材料的高性能功率隧道級聯950nm及990nm雙應變量子阱激光器,激射分別為952 2nm和990 2nm , el譜的譜線寬度約3nm ,未鍍膜器件單面輸出光功率可達2w以上,閾電流低達120ma 。
  10. Meanwhile it can filter the waveform and gather the envelope and calculation the current peak and max steepness of lightning by length of erased magnetic record. thirdly we need analyze the difference of length of erased magnetic record between kinds magnetic tape or pre - recorded sine wave on magnetic tape, and finding the min and max lightning current that can be recorded by magnetic tape. then we confirm the type of the magnetic tapes and the way of installing which fit to the line towers

    同時對該形進行濾消噪,提取包絡線計算磁帶消磁度和雷電流峰陡度第三部分根據mtlcd得出的數據分析不同雷電流通道下不同磁帶、不同預錄正弦消磁度的差異及磁帶可以記錄的小雷電流和雷電流,找到可以在輸電鐵塔角鋼上安裝使用的磁帶及其放置方式。
  11. From three - wave coupling equations, the optimal crystal length, conversion efficiency and parametric light pulse width are computed numerically when clbo is used in picosecond optical parametric amplification. the results present that clbo are suited for optical parametric amplification in short wave band. in order to get higher conversion efficiency, the crystal length should be optimized according to the intensities of pump and signal waves

    從三耦合方程出發,對clbo用於皮秒級光參量放時,佳晶體度、轉換效率和參量光的脈沖寬度進行了理論分析和數模擬,結果表明clbo晶體適合在短范圍作光參量放,為達到高的轉換效率和窄脈寬的信號光輸出,泵浦光和初始入射信號光的強度應根據晶體度取優化
  12. The results show that wavelength locates in gain zone of semiconductor optical amplifier, and have higher peak power and proper time delay between the two pulses for the second order super gauss control pulse in semiconductor optical amplifier. a high quality amplified signal pulse can be achieved. the chirp can be reduced notability by using cascading soa in cross gain modulation based on soa, and the distance and the peak power of conversion optical pulse can be increased notability, and we can let down the demand for wavelength based on xgm in soa and enhance the flexibility of wavelength conversion

    我們應用二階超高斯光脈沖與高斯信號脈沖同時注入soa和應用soa與非線性光學環鏡( nolm )相結合的方案來對信號脈沖進行壓縮整形,模擬顯示,在調節系統合適參數的情況下,位於soa增益區的二階超高斯控制光脈沖在具有較高的峰功率和適當時延下輸入soa時,後可以得到放的高質量超簡訊號光脈沖;在基於soa的交叉增益調制( xgm )全光轉換中,採用級聯的soa能有效地使反轉光脈沖的頻率啁啾得到有效降低,向下轉換的距離和反轉光的峰能量都得到明顯提高,降低了利用交叉增益調制( xgm )轉換中對精度的要求,從而提高了轉換的靈和性。
  13. Found there is relativity between max effective activation wavelength k and ion radius of photochromic compose in photochromic glass, and there is no relativity with based glass

    發現光致變色玻璃的有效激活波長最大值_ m與光敏相組成中離子半徑的小相關,與基礎玻璃的組成沒有明顯的關系。
  14. 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c段wdm光信號的拉曼光纖放器的增益特性採用打靶法和四階龍格- - -庫塔進行了數計算,在給定了兩個泵浦光源的功率后,找出了反向泵浦情況下使c段wdm光源增益平坦的兩個泵浦的各自佳功率,同時也分析了導致信號光飽和的原因。
  15. The simulation results show that to start the oscillation, the length of the resonance cavity must be well matched with the radial span of the cavity ; mismatch of them will greatly affect the microwave development ; the output power of the microwave in rtto is affected by the microwave mode obviously. under the same conditions, the output power for temooi mode is the highest, and its start and saturation time of oscillation are the shortest. the results also show that the output power will decrease with the increase of the size of the extract window ; the operating state of rtto has great close relationship with the operating current, and there exists an optimum current value

    結果表明,束電壓一定時,諧振腔腔和徑向間距必須良好匹配微才能起振,匹配不佳會極地影響微產生;微模式對微產生功率影響很,同等條件下, tem _ ( 001 )模式的微功率高,起振時間和飽和時間短;微輸出功率隨提取口的增而減小; rtto工作狀態與工作電流的小關系密切,存在一個佳工作電流
  16. The result indicates that, with the increase of polarity of the solvent, the excited energies are red - shifted and the two - photon absorption cross sections augment

    論文的研究結果表明:一般的,隨著溶劑極性的增加, tpa截面處對應的入射光子的紅移, tpa截面隨溶劑極性的增加而逐漸增
  17. It is a pop method to embed watermark in frequency field, in most literature, they embed watermark into the coefficients of fft, dct, or high - frequency of dwt using quantization method, we think that : embedding watermark into the low - frequency of audio signal dwt field can improve the robustness of watermark. the watermark is embedded in the maximum of subsection of approximate component the watermark signal using quantization method, for the same quantization size, the “ noise ” added to the signal is

    在頻率域嵌入水印信息,是目前一種主流的嵌入演算法,在很多文獻中,都是通過量化音頻信號的ftf系數, dct系數,或者是dwt域的高頻系數。我們認為:在小域內的近似分量(低頻系數)中嵌入水印能夠提高數字水印的魯棒性,通過量化嵌入水印的方法,將水印嵌入到近似分量中每個分段中上,因為這樣對于同一個量化步,量化對象的幅,所疊加的「噪聲」就越小,從而提高了數字水印的不可感知性。
  18. 10min later, it went down to 86. 27 % of the control, and then went up again. 30min later, it hit to 113. 93 %, which surpassed the value of the first peak

    Sod活性隨低溫處理時間的延,先增高,在10min時達到,然後下降,在20min降低到谷,但是仍然遠遠高於對照,然後又開始升高。
  19. We discuss the effect on the focusing of the probe beams for the five initial parameters : the amplitude of the pump beam, the separation between the pump and the probe beam centers, the wavelength ratio of the pump and the probe beams and the ratio of the initial beam widths at the directions of x and y. our numerical results show that, more the amplitude of the pump beam, the wavelength ratio of the pump and the probe beams and the ratio of the initial beam widths at the direction of y, more the probe focus ; the separation between the pump and the probe beam centers and the ratio of the initial beam widths at the direction of x have optimum values, respectively

    研究了泵浦光束輸入振幅、泵浦光束-信號光束初始偏移、泵浦光束-信號光束比和泵浦光束-信號光束x 、 y方向的初始束寬比五個參量對信號光束聚焦程度的影響。數模擬結果表明,泵浦光束輸入振幅越、泵浦光束-信號光束比越、 y方向束寬比越,信號光束聚焦程度越;泵浦光束-信號光束初始偏移和x方向初始束寬比都存在一個,使得光束聚焦達到佳效果,有趣的是這兩個的比基本保持不變約為0 . 4 0 . 6 。
  20. Wavelength of maximum emission

    波長最大值
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