composition variation 中文意思是什麼

composition variation 解釋
演化瞧
  • composition : n 1 作文（法），作詩（法），作曲（法）；作品，文章；樂曲；文體，措辭。2 編制；結構，構造，組成，...
  • variation : n 1 變化，變動。2 變量，變度，偏差。3 【語言】語尾變化；變體，異體；【數學】變分，協變；順列；【...
  1. Basic equation for variation of bed material composition in active layer of alluvial river

    沖積河流混合活動層內床沙級配變化的動力學基本方程
  2. We concludes that the selected herbicide for smooth cordgrass does not obviously affect community composition and the habitats of benthic species, the coherent variation trend of benthic community composition correlates with time between experimental zone and controlled zone

    這表明互花米草防除藥物對底棲生物群落組成結構及其生境的干擾不大，試驗區與對照區底棲生物群落組成結構總體一致的變化趨勢與時序有關。
  3. In this dissertation, the author analyzed plant biodiversity in yunmengshan forest region with field survey on plant species and forest vegetation, the results show that : the vascular plants in yunmengshan forest region include 548 species ( variation ) which belong to 319 genera, 98 families, the flora geographical composition are complex, the dominant characteristics of flora are temperate zone plants which account for 55 percent, herbaceous species occupy 75 percent exclusively. evaluating the threatened hierarchy of plants in yunmengshan forest region, the results show that the number of critically endangered species is 7, endangered species isll, vulnerable species is 53, lower risk species is79, safty species 376

    本文在對雲蒙山林區的植物物種、植被進行調查的基礎上，進行植物多樣性分析，研究結果如下：雲蒙山林區共有維管束植物98科319屬548種和變種，地理成分復雜，包括中國全部屬的15個分佈區類型，區系組成以溫帶成分為主，佔55 ；生活型譜中，草本植物種類占絕對優勢，比例為75 . 3 ；通過瀕危評價，得出雲蒙山林區植物極危種7種，瀕危種11種，漸危種53種，敏感種79種，安全種376種。
  4. The present paper analyses the relative volatility of ethyl - benzene / styrene and meta - xylene / styrene and para - xylene / styrene is affected by pressure variation in ethyl - benzene / styrene packed tower, and also analyses the fractional composition is affected by pressure variation in above packed tower

    摘要通過模擬計算，分析乙苯苯乙烯塔壓力變化對乙苯苯乙烯、間二甲苯苯乙烯、對二甲苯苯乙烯相對揮發度的影響；壓力變化對塔釜乙苯含量、間二甲苯含量、對二甲苯含量及塔頂乙苯中苯乙烯濃度的影響。
  5. After spraying the herbicide, the results with time show that no obvious quantitative difference occurred in benthic species composition, biomass, inhabit density and the coherent variation trend between experimental zone and controlled zone

    藥物噴灑后不同時段調查結果表明：試驗區與對照區的底棲生物種類組成、生物量、棲息密度同步對比數量相差不明顯，其隨時間變化的趨勢亦呈現總體一致。
  6. The ralationship between the color of turquoise and its composition and structure is studied, that is, the variation from blue through green to brown yellow is dependent on the amount of iron. absorped water, crystalline water and hydroxyls lose from turquoise when it is heated, therefore its structure is destroied and its color also becomes green, yellow from azure

    隨著鐵含量的增加，綠松石的顏色逐漸由藍變綠、變黃；隨溫度逐漸升高，綠松石失去結晶水和結構水，結構被破壞，由原來的天藍色逐漸變成綠色、黃色。
  7. Part 3 is the empirical analysis to the influencing factor of listed company ' s capital structure in china, specifically with spss software and main composition analysis method, it correlated dividend policy, income tax, equity structure, non liability tax shield and income variation level of company, company growth, company ' s profit ability, asset structure, company ' s scale with capital structure ( the contents embrace btdr, bldr, bsdr ), we make the conclusion as follows : comparing with the research result of influencing factor of the company ' s capital structure of the developed country, the influencing factors of the listed company ' s capital structure in china have partial similarnesses

    第三部分中國上市公司資本結構的影響因素分析這部分是本文的重點之一，具體是採用spss11 . 5軟體，用主成分分析法與多元回歸分析，對公司的股利政策、所得稅、股權結構、非負債稅盾、收入變異程度、公司的成長性、公司盈利能力、資產結構、公司規模與代表資本結構的變量（ btdr ， bldr ， bsdr ）作相關研究，結果是：和發達國家公司資本結構的影響因素研究結果相比較，我國上市公司資本結構的影響因素存在部分相似性。
  8. Much information was achieved by analysis of different kind of tar samples, including the production and evolution of tar in gasification process, the variation of tar composition under catalytic or thermal cracking conditions. and the mechanism of tar cracking was discussed in - depth with the variation of tar composition under different cracking conditions

    對多種焦油進行分析，獲得了大量焦油構成信息，並以此對生物質氣化過程中焦油的產生和變化情況、催化裂化或熱裂化過程中焦油組分的變化情況、以及裂化過程參數對焦油組分和焦油量的影響進行了深入的機理性分析。
  9. According to the raman selection rule and the pl measurement, it is reasonable to evaluate the quality of galnp / algalnp mqw by analyzing the relative intensity ratio of a1p - lo / to. ( 4 ) a new modified random element isodisplacement ( mrei ) model is set up to calculate the dependence between the long - wavelength optical phonon frequencies and the composition of iii - v - type ab1 - xcx mixed crystals. the second neighbor force constants are still assumed to be a linear variation with the composition, but the two first neighbor force constants can be evaluated to be a negative exponent variation with the composition, using the overlapped repulsive potential of the ion crystal combination

    通過實驗我們找到了在這些結構參數上生產gainp algainpmqw的較理想的結果； （ 3 ）首次用喇曼（ raman ）散射方法研究了常溫下的gainp algainp多量子阱結構，除了指認出喇曼光譜中各光學聲子模外，還結合樣品光致發光譜的測量結果，分析發現喇曼光譜中alp - lo to的相對強度比可以在一定程度上評定晶體gainp algainpmqw的生長質量； （ 4 ）在修正的隨機元素等位移? mrei模型的基礎上建立了一個新模型，計算了ab _ （ 1 - x ） c _ x型?族半導體混晶的長波長光學聲子模頻率的組分變化關系。
  10. Study the effect of composition variation within the constituent oxides in the high - tc superconductors to the structure, tc and hole concentration

    研究高溫超導體中各種氧化物間組成變化對結構、超導溫度和電洞濃度的影響。
  11. The variation of the film composition can be monitored by using the method of spectrum analysis during the film deposition ( for the intensity of the persistent line is proportional to the particle density of the element in the vacuum chamber ). the measurement of the transmission spectrum of the film on a transparent substrate can be used to calculate the film parameters, such as refractive index, extinction coefficient and the thickness of the film. therefore, the combination of the two methods would be helpful to on line monitoring the film constituents and the optical paramenters in the preparation of thin films

    在制備薄膜的過程中，利用光譜分析的方法，以放電光譜特徵譜線強度的變化來反映相應物質成分的變化，以連續光譜光源發出的光透射過薄膜的透射率的變化，來反映薄膜的厚度、折射率、吸收系數等光學參數的變化，從而達到在制膜過程中，對薄膜的成分、厚度等參數進行在線監控的目的
  12. In this article, based on the rainfall data over north china in spring and respective month, atmospheric circulation data ( ncep ) and the sea surface temperature data ( sst ), the methods of eof analysis, yamamoto analysis, mesa analysis, correlation analysis and composition analysis are used to study totau spatial and temporal distribution characteristics of the rainfall in spring and respective month over north china, investigate correlation with interannual andinterdecadal variation of sea surface temperature and atmospheric circulation, and analyse mechanism of influence

    本文用華北春季及春季各月降水資料， ncep資料以及coads海溫資料，採用eof分解、 yamamoto分析、最大熵譜分析、相關分析、合成分析等方法研究了華北春季、各月降水的總體分佈特徵及時空分佈特徵，並從總體上探討了其與海溫、大氣環流年際、年代際變化的關系及其影響機制。
  13. The calculated results are in agreement with the measured ones, indicating that according to the flow rate and composition of the exhaust gas and the mass and the carbon content of the liquid iron, the carbon content of steel bath can be dynamically determined ; with the aid of thermodynamic equilibrium analysis, the dynamic variation of temperature of the steel bath can be forecasted from the dynamic carbon content and the data from the exhaust gas analysis system

    該模型計算結果與檢測結果吻合較好，這表明：通過煙氣流量、成分及鐵水質量和初始碳含量可動態地確定熔池中的碳含量；以動態確定的碳含量為基礎，結合爐氣分析數據，再經熱力學平衡分析，可預測熔池溫度的動態變化。
  14. Sequence variation analysis exhibits high transition to transversion substitution ratios, and transitions and transversions are unsaturated in the sequence of cytochorme b gene. the base composition of the cytochrome b sequences was highly biased. using a structural model of the cytochrome b protein as a template, we divided cyt b sequence data for species within anserifomes into three functional domains

    3 ）序列具有較高的轉換顛換比，基因序列中的轉換與顛換都未飽和，序列中的堿基組成高度偏倚： 4 ）按照細胞色素為蛋白結構模型，細胞色素b基因全序列可分為三個功能區，堿基替換飽和狀況與不同功能區相關聯。
  15. Complete co i sequence, co ii sequence and co i + ii sequence were used for comparison. nucleotide composition and variation of each sequence fragment were analyzed using mega2. 1. genetic relationships among haplogenotypes were estimated based on the pair - wise matrix of sequence divergences by kimura ' s two - parameter

    第1180一1569位區段分子樹表明黃紋鱗石蛾與弓突鱗石蛾的親緣關系較近，與根據形態學建立的系統關系相吻合。
  16. The sequence is : non - classical ng supersaturated solid solution spinodal decomposition the variation in precipitation mechanism of 8 " phase in intermediate region is systematically investigated firstly, and it is found that with the increase of composition the precipitation characteristic transforms from that of metastable to instable region gradually

    首次發現l12有序疇之間首先形成較寬的重合位置點陣，隨時間延續，重合位置點陣逐漸向ll :結構轉變，在兩有序疇之間形成反相疇界，隨后，由於合金發生分解，反相疇界被有序一無序界面替代。
  17. Abstract : by means of mineralogical study of earlier slag samples of the flash furnaceanalyze the mineralogical composition and its variation, so that expose oxidation atmosphere in furnace and required controlled parts in the later smelting

    文摘:本文通過對閃速爐前期爐渣的礦物學研究，分析礦物的組成及變化情況，以揭示爐內氧化氣氛的強度及在後期冶煉中需注意控制的部分。
  18. Utilizing the scanning electron microscope, x - ray diffractometer, type 9310 microporosity analyzer, the microstructure and chemical composition of mudston, and its macro - variation of physical and mechanical character are measured and analysed, the mechanism of mudstone degradation and softening in water is systematically studied in this paper

    以掃描電子顯微鏡、 x射線衍射儀、 9310型微孔結構分析儀等先進的設備為測試手段，從泥巖的微觀結構及物質組成等方面入手進行研究，結合泥巖遇水后宏觀物理-力學性質的變化規律，全面闡述了泥巖遇水的崩解軟化機理。
  19. There were little difference in the amino acid composition of antigen domain of a, b and c between c strain from rabbit spleen tissue and virulent strains above. this indicated that the prevalence of csf and immunal failure may be not caused by the antigen variation of c stain vaccine virus. the e2 genes of 51 csfv prevalent virulent strains isolated from 12 provinces in china were amplified and sequencd

    對c -株兔脾毒與c -株細胞毒、經典強毒e2上的a 、 b 、 c三個中和性抗原區的氨基酸組成進行了比較，其結果為： c -株兔脾毒與c -株疫苗細胞毒的差異很小甚至沒有差異。
  20. The dissertation was relied on the project of national nature science foundation project formation and failure of hard crust on the subaqueous delta of yellow river ( contract no. 141720888 ), and objective to research dynamic variation of engineering geological environmental factors i. e., topographic and morphologic features, composition and structure, physical and mechanical properties on the subsurface of yellow river delta, that was induced by wave loading action

    本學位論文以國家自然科學基金面上項目「黃河口水下斜坡硬殼的形成與破壞」 （項目號： 141720888 ）為依託，旨在研究波浪作用導致的黃河三角洲表層工程地質環境要素，即形貌特徵、物質組成、物理力學性質的動態變化過程。
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