background concentration 中文意思是什麼

background concentration 解釋
背景濃度
  • background : n 1 後景，背景；基本情況；（紡織品等的）底子；出身；經歷。2 隱蔽的[不引人注目的]地位；幕後。3 襯...
  • 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 regulation showed : land use diversity and combination types of land use were increased from suburb to distant suburb plain and half coteau. the opposition trend was presented on the change of the concentration index of land use. as distant suburb coteau was controlled by the background of mountain, the land use diversity index was minimum and the concentration index was maximum

    北京市土地利用格局的區域差異呈現如下規律：土地利用多樣性和土地利用組合類型數由近郊向遠郊平原、遠郊半山區依次遞增；土地利用的集中程度則剛好相反；遠郊山區由於受大環境背景山地控制，土地利用多樣性在各區中是最小的，而集中程度則是最大的。
  2. In chapter 1, the history investigation of gap : n with dilute nitrogen concentration, especially its isoelectronic exciton mechanics and the study background of gapn alloys are briefly introduced

    早在二十世紀六十年代， thomas等人就發現在gap : n中，存在一系列尖銳譜線。
  3. 4 ) the number and mass concentration distributions of the background atmospheric sand particles of ymchuan, bayanhot and tonggunur display a unimodal form, obeying a logarithmic normal distribution, greatly differing f

    黃沙的長距離輸送和小雨是泥雨形成的原因。雲物理和降水與來自沙塵粒子混合，尤其是小於zpm的粒子，導致了華北地區泥雨的發生。
  4. This paper explores the beginning of the literariness and its background, connotation and value through the concentration of the literariness in the classical texts of confucianism, taoism and mohism

    本文力圖從先秦儒道墨三家經典文本中對文學性的或正或反兩方面的關注入手來發掘這種文學性的初始肇端及其背景、內涵和價值意義。
  5. 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。
  6. The results of the experiments indicates that concentration of aminosilane influences the fluorescence background of glass slide, and some factors affect immobile ratio of oligonucleotide probe, such as aminosilane treatment time, aldehyde treatment time, uv crosslinking energy, washing temperature and time

    研究表明，氨基化試劑濃度對玻片熒光背景有影響，氨基化試劑處理時間、醛基化處理時間、紫外交聯能量和洗滌溫度和時間等工藝因素影響寡核苷酸探針的固定率。
  7. But under the increasing competition background of the medical industry, tonghua medical industry begins to enter into the important period of transition in which the competing power of the market should be enhanced quickly. the conflicts that the degree of concentration of this industry is not high and the scale effect is unconspicuous appear step by step, and many enterprises for pharmacy fall across questions of lack in developmental stamina

    但是，在醫藥行業競爭日益加劇的背景下，通化醫藥產業開始進入市場競爭力亟待提升的重要轉折期，產業集中度不高、規模效應不明顯的矛盾逐步顯現，多數制藥企業遇到發展后勁不足問題。
  8. Given the historical background and system arrangements, their intimate connection is examined and policy implication on shareholding structure is presented according to the statistical results. as a result, we find the following results : first, it is shown in the empirical study that an over - diversified shareholding structure may lead to the " free rider " problem and the relative concentration of the shareholding is beneficial to the enhancement of firm value. second, the relative control by the legal person is beneficial to the enforcement of corporate governance in the chinese listed firm

    （ 2 ）股權相對集中有利於提高我國上市公司價值；國家股比例對公司價值的影響不顯著；法人股比例與公司價值成u型曲線關系，當法人股比例在0 35 . 05之間時，公司價值隨法人股比例的上升而增加，當法人股比例超過35 . 05時，公司價值隨法人股比例的上升而下降；流通股比例與公司價值成負相關。
  9. According to the recent practice of towns concentrated areas in zhejiang, this paper analyzes the problems existing in the " zhejiang mode ". based on the historical background and new tendency of urban economy development, it points out that the " sub - center concentration " area is a typical evolvement mode of urban group space

    本研究針對目前省內城鎮密集地區發展的實踐熱潮，通過對「浙江模式」的分析與總結，提出「亞中心極化」地區演化模式是在歷史背景和新的城市經濟發展趨勢下所產生的一種典型的城鎮群體空間演化模式。
  10. A larger frequency response occurred at a ph greater than pi. a decrease in the concentration of the background electrolyte increased the frequency response. these findings have been reasonably explained

    在ph值大於等電點pi時頻率響應較大；背景電解質濃度的增大引起頻移的增大，對這些結果進行了合理解釋。
  11. Analysis of boron background concentration and pollution status of water in kuandian county

    寬甸縣水中硼的背景濃度及污染現狀分析
  12. Eight heavy metal elements are measured under atmospheric background and dust - sandstorm weather conditions. element - concentration under dust and sand storm is as higher 3. 43 - 6. 30 times as background. six heavy metal elements in precipitation are also analysed and its sharp variation geographically are found

    分析了大氣背景和沙塵天氣下的8種重金屬元素濃度和降水中的6種重金屬元素濃度，結果表明，沙塵天氣重金屬元素濃度是背景值的3 . 43 - 6 . 30倍，降水中6種重金屬元素濃度的地理分佈存在不均勻性
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