spectral concentration 中文意思是什麼

spectral concentration 解釋
光譜特性
  • spectral : adj. 1. 鬼的；鬼怪（似）的。2. 【物理學】光譜的。
  • concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
  1. The decision was based on spectral measurements by the orbiting mars global surveyor, which showed an unusual concentration of haematite, a form of iron oxide

    決定建立在由圍繞火星飛行的火星全球探測器所做出的光譜測量基礎上，其中顯示了不同尋常的赤鐵礦（氧化鐵的一種）含量。
  2. Because the concentration of zirconium in uranium has large ranges, from 1. 50xlo ' 6 - 3. 8g / gu, not only how to decrease the remainder of uranium to eliminate its determinate effect but also how to acquire higher recovery of zirconium is considered, so the method of silica gel, the method of tbp levextrel resin chromatography, the method of tta chromatography and the method of tta extraction are compared. then tta extraction is chosen to acquire the ideal separation purpose. compared with icp - ms and icp - aes, xrf has characters of high repeatability, stability, low cost, high concentration elements analysis, the ability to determinate solid sample and having comprehensive practicability, but xrf has lower sensitivity, so how to increase the concentration of the sample to acquire better precision is a difficult problem, the optimum of operating condition : the integral time of spectral lines is 60s, the integral time of background lines is 20s, the voltage of xrf is 50kv, the electric current is 50ma

    由於鈾中鋯的含量范圍很廣，從1 . 50 10 ~ （ - 6 ） 3 . 8g / gu ，在分離和測量時，既要考慮盡量地減少鈾的殘留量以消除鈾對鋯測量產生的影響，又要獲得鋯的理想的回收率，因此本文在分離方法的選擇上比較了硅膠吸附分離法， cl - tbp萃取色層法， tta萃取色層法和tta萃取分離法的優缺點，認為tta萃取分離法可以達到理想的分離效果。
  3. Based on the theoretical analysis and experimental researches, it is presented that the wider spectra are resulted from the many fluorophores with large numbers of vibrational energy levels on the ground level in the blood cells, and the reduction of the spectral intensity is due to the reabsorption of the blood cells and the energy transfer of the collisions between the fluorophore and another one or other macromolecule. on the other hand, when the concentration of the blood cells is increased, the reabsorption of the blood cells, the secondary fluorescence due to the reabsorption and the influence of the concentration on the energy levels of fluorophores are all the factors of the red - shifted spectral peaks

    在進行理論分析和研究的基礎上，提出了因血細胞中存在多種熒光團，且這些熒光團的電子能級上又存在大量的不同的振動能級，從而導致被激發的熒光團發出較寬的熒光光譜；血細胞濃度的增大，熒光團以及其他大分子之間的距離變小，造成它們之間因碰撞的能量轉移概率加大，因而易產生熒光猝滅，結果導致熒光強度的變小；血細胞溶液中重吸收所導致的熒光猝滅和二次熒光發射，以及血細胞濃度的變化對其中熒光團能級系統的影響都是導致熒光峰值波長「紅移」的原因；進而研究了led光誘導血細胞產生熒光光譜的機理。
  4. The article mainly includes the design of experimental set and concentration retrieve arithmetic. as doas technique is a kind of weak light detecting technology, it is the key to increase the snr ( signal - to - noise ) of spectral signal

    由於差分吸收光譜技術是一種弱光檢測技術，所以對于其相關實驗裝置來講，提供高的信噪比是關鍵，從而使得限制雜散光、消除各種光電子噪聲等變得很重要。
  5. This radiator has, for any wavelength and any direction, the maximum spectral concentration of radiance at a given temperature

    在給定溫度下，對于所有波長和入射方向黑體輻射功率最大。
  6. The spectral lines emitted from these species can be used to determine the sample composition. the wavelengths observed are characteristic of the individual elements present in the sample, and their intensities are related to the concentration of the corresponding species in the sample

    高功率密度的激光使樣品表面汽化，產生處于激發態的原子和離子，而激發態原子和離子的發射譜線可用於樣品成分的鑒定，發射譜線的強度與該原子對應的元素在樣品中的含量有關。
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