negative dispersion 中文意思是什麼

negative dispersion 解釋
負色散
  • negative : adj 1 否定的 否認的；拒絕的 （opp affirmative）； 反對的 反面的；消極的。2 （opp positive） 【電...
  • dispersion : n 1 分散，散開；散布，傳播；離散。2 【物理學】彌散，色散；【化學】分散作用；被分散物；分散相，分...
  1. Beryllium powders with the same particle size and various contents of beo were prepared by pre - sintering - acid washing processes initiatively and the influence of beo alone on o mys of beryllium was observed and some new results have been obtained - compared with the content of beo, the distribution of beo in beryllium has more critical influence on mys ; finely dispersed beo along the grain boundaries and in the matrix results in the dispersion strengthening of beryllium matrix and thereby the higher mys value ; on the contrary, the coarser beo particles clustering on the grain boundaries results in negative influence on o mys

    開創性地用預燒結? ?酸洗工藝制備了相同粒度、不同beo含量的鈹粉，從而開展了beo含量單獨對鈹材_ （ mys ）影響的研究，得出一些新的結果：與beo含量相比， beo在鈹中的分佈狀態對_ （ mys ）的影響更大。沿晶界、晶內彌散分佈的較細小beo對基體鈹有彌散強化作用，使_ （ mys ）即較高；如果beo較粗大地成簇狀聚集在晶界，反而對_ （ mys ）有不良的影響。
  2. There has been a revolutionary advance in ultrashort pulse technology since the discovery of self - mode locking of ti : sapphire lasers. few - femtosecond pulses have already been generated from ti : sapphire lasers, by means of combining self - phase modulation with negative group velocity dispersion, which is similar to the way of soliton generation

    鈦寶石激光自鎖模的發現使得超短脈沖技術發生了革命性的變化，利用自相位調制和負群速度色散結合的類孤子產生方式，人們已經在鈦寶石鎖模激光器上得到了脈寬只有幾個飛秒的光脈沖。
  3. We analyse the dispersion of stock returns and have the tests of serial correlation. the results show that the trading mechanism has a significant effect on a number of characteristics of stock returns. first, the distribution of open - to - open returns has greater variance than that of close - to - close returns. second. the serial correlation pattern is quite different in the two return series. the open - to - open returns have negative autocorrelation coefficient, but the close - to - close returns is positive. further, employing an arma ( 1, 1 ) model we find that in the opening. returns exhibit higher residual noise and stronger dependence on past returns, reflecting stronger deviations from the random - walk form of the market efficiency hypothesis

    主要表現為：一，開盤收益序列比收盤收益序列具有更大的方差。二，兩種收益序列的序列相關形式不同，開盤收益序列表現為負相關，而收盤收益序列表現為正相關。而且我們通過arma （ 1 ， 1 ）模型的進一步檢驗，發現開盤收益序列比收盤收益序列具有更大的殘差，更依賴于過去的收益序列，也更偏離於市場有效的隨機遊走形式的假設。
  4. Second, negative dispersion without absorption, which leads to superluminal light propagation, is achievable in the central resonance structure of the dispersion spectrum. the negative dispersion is slightly weakened as the spacings between dressed states increase

    其次，在色散光譜的中心區域，呈現出無吸收負色散，這種效應能夠導致超光速傳播，但它隨著修飾態間距增加而減弱。
  5. The equation is also a unified approach to the design of common trible - clad optical fibers. by genetic algorithm, the optimized refractive index profile ( rip ) of dcf is calculated to obtain maximal value of negative dispersion. this rip ensures the propagation of basic mode in dcfs

    然後根據色散方程（特徵方程） ，用基因法優化色散補償光纖的負色散，得到了求得最大負色散時的色散補償光纖的光纖結構，同時保證基模在光纖中的傳輸。
  6. The fourth order dispersion is compensated by combination of the effects of proper source chirping and negative residual second - order dispersion. the interesting fact is that the optical pulses can

    與零平均二階色散情況相比較，加入殘餘二階色散不僅可以在一定程度上延長傳輸距離，還可以增加系統的穩定性。
  7. Investigation of the effect of negative third - step chromatic dispersion in adiabatic pulse compression in edfa

    脈沖絕熱壓縮中負三階色散影響的研究
  8. Also, any negatively refracted wave would be rapidly smeared out in only a few wavelengths by dispersion, which valanju maintains will always be a major problem in a negative index material

    此外，負折射波將在幾個波長內因色散而快速衰減，瓦藍朱認為這將是負折射率材料最大的問題。
  9. We also compared the effects of positive and negative third - order dispersion working with srs. the result shows that the effect of negative third order dispersion working with srs is more suitable for pulse propagation and compression. as a result, we proposed two methods to facilitate the propagation of optical pulse in nolm, and hence provided a theoretic guidance to the better design of eight - figure fiber laser

    並且通過比較正、負三階色散分別與拉曼散射效應的相互作用對飛秒脈沖傳輸特性的影響，發現脈沖拉曼散射與負的三階色散相互作用更有利於飛秒脈沖的傳輸與壓縮，從而提出了改善了飛秒光脈沖在環形腔中的傳輸特性的兩種方法，進而為「 8 」字形光纖激光器的優化設計提供了理論指導。
  10. Influence of the negative third - order dispersion on the soliton compression effect in fsdd

    中負三階色散對孤子壓縮效應的影響
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