quantitative variation 中文意思是什麼

quantitative variation 解釋
數量變異
  • quantitative : adj 【數學】量的；定量的。 the quantitative limits that determine the qualities of things 決定事...
  • 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. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。
  2. Varieties of flowering colors present cline. specially, variations of flowering colors within puer population are many and varied. longs and widths of perianths as well as longs of stamens are continuous variation of quantitative characters

    結果表明：居群內各種形態性狀都具有豐富的多態性，居群間具有明顯的多型性；花色呈梯度變異，特別是普洱居群花色變異式樣最豐富；花被片的長與寬和雄蕊的長度是數量性狀的連續變異。
  3. Three main error sources are the variation of intensities, the orientation errors associated with the configurations of the polariscope and the initial stress existing in the model. a quantitative method is presented to analyze and estimate the influence of different error sources on the final isoclinic results calculated by fcpst or the other pst

    本文提出它們影響五步彩色相移法的定量誤差分析方法；提出控制各誤差的具體指標；給出了避免或降低這些誤差源影響的措施，為合理設計製造儀器、指導實驗和保證實驗結果的精度提供了依據。
  4. Tree ring is a kind of natural archives, on which the isotopic analysis is important to study global climate and environmental change. the authors mainly provide a comprehensive introduction to the fractionation models of carbon, hydrogen and oxygen isotope in plants, their research techniques and the extract methods from cellulose. that results show isotopic tracer can record the message of climatic variation and has become a powerful tool for paleoclimate reconstruction and for the modern environment changing research. especially studying on pages, the cellulose isotopic analyses of imbedded old tree ring have become the mainly quantitative means of environmental evolvement. in addition, china is a typical monsoon country, research in tree ring stable isotope seasonal variation can give us a lot of important information on that. up to now, the research techniques and works on tree ring in our country are still in its earlier stage, and remain many limitations. it needs further accumulate basic research materials, intensify regional contrast and intercross studies on relative subjects

    尤其是在過去全球變化pages研究中，埋藏古木纖維素中的碳氫氧同位素分析已成為環境演化研究的主要量化手段。另外，對于中國這樣典型的季風氣候國家，開展樹輪穩定同位素隨季節性變化的研究具有重要的意義。我國在樹輪研究方面起步較晚，研究方法和研究內容上也比較簡單，還存在不小差距，既要進一步積累基礎資料，又要做區域對比，加強與相關學科的交叉研究。
  5. In this research, geostatistics was adopted to analyse crop growth status, soil nutrient and yield, with emphasized on quantitative characterization of the spatial variation and investigating the relationship between crop growth indices and yield from spatial distribution

    本研究首次在作物長勢分析中引入地統計學手段，結合田區土壤養分和產量的空間變異特徵，著重定量描述了作物長勢空間變異規律，並從空間分佈的角度探尋作物長勢監測指標與產量的關系。
  6. On the basis of examination of more than 2000 specimens ( including types ) from 15 herbaria worldwide, the characters features of species, phonological phase, ecoloigical habit and the relation to close species were analyzed, recorded and described, the disputed species were compared, measured and counted in detail, the quantitative analysis to different characters was done through dot - map, the variation pattern of major morphology characters was analyzed and their significance for a better delimitation of the species was evaluated

    查閱或借閱國內外17個標本館近2000份標本（包括模式標本） ，描述了每個種的性狀特徵、物候期、生態習性及其與近緣種的關系，確定性狀的極性，對有爭議種的形態性狀進行詳細的測量和比較，用散點圖對個別性狀作定量研究，分析了主要外部形態學性狀的變異式樣、變異幅度及其對劃定物種范圍的價值。
  7. The author redesigned the common concrete beams and carried out a comparative analysis to the existing beams according to the specification for design of reinforced concrete and prestressed concrete highway bridges and culverts ( jtj023 - 85 ), the specification for design of reinforced concrete and prestressed concrete highway bridges and culverts ( informal version for advices ) and relevant rules of its matching stipulations, light aggregate concrete bridge technology stipulations ( ( informal version for advices ) and on the basis of prestressed concrete theory. the thesis emphasized on the research of the variation of the concrete, prestressing tendon quantities, their spans, beams " height and their rigidity of both the designed beams and the existing beams, and obtained the quantitative results from above research

    採用hslc置換梁體中的普通混凝土，並運用預應力混凝土理論，依據《公路鋼筋混凝土及預應力混凝土橋涵設計規范》 （ jtj023 - 85 ） ， 《公路鋼筋混凝土及預應力混凝土橋涵設計規范》 （徵求意見稿）和與之配套編制的《輕骨料混凝土橋梁技術規程》 （徵求意見稿）的有關規定，對上述普通混凝土梁進行了重新設計並與既有梁進行了對比分析，得出了設計梁與既有梁在混凝土及預應力筋用量、跨度、梁高以及剛度等方面的變化情況，得到了定量結果。
  8. The study shows that the early and late seed rains of constructive tree species in evergreen broadleaved forest at chongqing simian mountain had no activity. the bigger the seeds of the species and the earlier or later the seeds of the species matured, the higher the proportion of the seed rain damaged by animals. the quantitative variation of seed rain, active seed rain and seed bank did not take place at the same time. at early time, the number of seed banks of castanopsis fargesii, lithocarpus glabra, quercus myrsinrefolia, castanopsis plasyacantha, cinamomum subavenium. which own more active seed rain increased by geomitric series. the seed banks of castanopsis orthacantha and schima argentea were small, only survived a short time, and did not sprout next year. the quantitative dynamics of seed banks and their increasing or decreasing rates were decided by the proportion damaged by animals, dying speed of seeds and their resistance to pathogens and adverse circumstances, and the state of seed germination

    對重慶四面山常綠闊葉林建群種種子雨、種子庫的研究表明，建群種早期和晚期的種子雨無活力;種子偏早或偏晚成熟及大籽粒的樹種，其種子雨被取食的比例大;種子雨、有活力種子雨、種子庫三者的數量變化不一致;有活力種子雨量較大的栲、石櫟、小葉青岡、扁刺栲、香桂等，其種子庫密度在早期以近幾何級數的方式增長，元江栲、銀木荷種子庫小，存在時間短，翌年無一年生萌發苗;種子庫數量動態、消減率動態決定於種子被取食的強度、種子衰老的速度以及種子對病菌、逆境的抗性和種子萌發的整齊性
  9. Applying qualitative and quantitative research methods, the paper has analyzed the main similarities and differences between the final systems of bai dialect and ping dialect spoken in nanning, and explained the reasons from the historical, regional, systematic and reading - variation perspectives

    摘要運用定性和定量相結合的研究方法，分析、歸納南寧白話與南寧平話韻母系統之間的主要異同點，並從方音比較研究的歷史觀、地域觀、系統觀、異讀觀出發，對南寧白話與南寧平話韻母系統之間的主要異同點作出因果性的解釋。
  10. 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。
  11. Abstract : quantitative genetic variation in larval tolerance to cyhalothrin and fenvalerate was examined in a pyrethroid - resistant population of cotton bollworm, helicoverpa armigera ( h & uuml ; bner ) was examined with half - sibling analysis and significant additive genetic variation in larval tolerance was detected, demonstrating that tolerance phenotypes in this population are highly heritable ( h2n narrow sense heritability = 0. 4625 0. 1578 ) to fenvalerate than that to cyhalothrin ( h2n = 0. 2476 0. 0248 )

    文摘:通過單對交配設計不同的交配家系，採用半同胞法分析了棉鈴蟲對三氟氯氰菊酯和氰戊菊酯的抗性狹義遺傳力，並對2種菊酯類藥劑的抗性發展速度進行評價。
  12. A high - density molecular linkage map will be of value for studies designed to assay genetic variation, identify markers associated with dissect quantitative trait loci, and perform marker - assisted selection to improve agronomically important traits within plants

    摘要高密度分子連鎖遺傳圖譜對分析植物遺傳變異、標記目標性狀、數量性狀定位和分子輔助選擇改良性狀均具重要價值。
  13. Based on the fractal character of the small watershed topographic feature, the spatial and temporal variation character of sediment yield of the watershed model, the dynamic developing process and fractal character of the topog raphic feature of the watershed model, and the coupling relationship between the sediment yield and the topographic feature of the watershed model are " studied by simulate experiment, fractal theory, high precise photogrammetry and gis technology. the validation research is conducted in chabagou watershed where the observation data of rainfall, sediment and runoff for 11 years is collected. the study provides new theory and method for the topographic feature quantitative research in the prediction model of small watershed sediment yield

    本文依據流域地貌形態所具有的顯著分形特徵，從模擬實驗出發，利用分形理論和方法，結合高精度攝影測量和gis技術，對流域模型侵蝕產沙時空變異特徵、地貌形態發育過程及其相應的分形特徵、流域模型侵蝕產沙與地貌形態耦合關系進行了深入研究，並以具有11年降雨泥沙徑流觀測資料的岔巴溝流域為例進行了驗證研究，為實現從單坡面侵蝕產沙模擬、預報向流域侵蝕產沙模擬、預報轉化過程中地貌形態參數的提取提供了理論和方法，為黃土高原小流域水土流失綜合治理提供了科學實踐依據。
  14. In terms of the ncep reanalysis data, rainfall and temperature data from sixteen stations of china and the tbb data provided by the meteorological research institute of japan, the main features and basic rules of westward extension and withdrawal processes of the northwest pacific subtropical high ( sth ) and its effect on the weather of the east china are investigated in this paper, by composite analysis, theoretical analysis and dynamical diagnosis. based on the relation between the heating and sth, the effects of the distribution of apparent heat source beside the sth on its maintenance and westward extension are also discussed, using the apparent heating to quantitative calculate the complete vorticity equation ( cve ). major results are as follows : ( 1 ) the variation of 500hpa vorticity in the key area ( 115 - 125 e, 20 - 30 n ) is used to indicate the westward extension process of sth

    本文利用ncep再分析資料和國家氣象局提供的160站降水和溫度資料以及日本氣象廳提供的t _ （ bb ）資料，通過合成分析、理論分析、動力診斷等方法，詳細分析了六月份西太平洋副熱帶高壓的西伸過程特徵，以及西太平洋副熱帶高壓西進東退的規律及其對我國東部天氣的影響，並圍繞加熱場與西太平洋副熱帶高壓的相互關系這一主題，重點討論了大氣視熱源分佈對西太平洋副高維持與西伸的影響，並運用全型垂直渦度方程對副高形態變異的可能機理進行了研究，得到了以下主要結論： （ 1 ）本文選取了關鍵區（ 115 ? 125 e ， 20 ? 30 n ）內的渦度值來表示副高的西伸過程。
  15. The quantitative relationship between the corrosion residual life and corrosion rate, variation coefficient, corrosion allowance and reliability is built up, and equations for calculating the corrosion residual life are derived

    初步建立了腐蝕剩餘壽命與腐蝕速率及變異系數、腐蝕裕量、可靠度之間的定量關系，得到了確定腐蝕剩餘壽命的計算公式。
  16. Using the qtdt ( quantitative trait transmission disequilibrium test ), we did not find significant results for association or linkage between the ahsg gene and bmd variation at the spine or hip. our data did not provide evidence to support the ahsg gene as a quantitative trait locus ( qtl ) for the bmd variation in a chinese population

    通過數量性狀傳遞不平衡法（ quantitativetraittransmissiondisequilibriumtest ， qtdt ） ，沒有檢測到ahsg基因與腰椎和髖部骨密度變異之間明顯的關聯或連鎖，因此我們的數據不支持ahsg基因是中國人群中導致骨密度變異的數量性狀位點（ quantitativetraitlocus ， qtl ） 。
  17. Abstract : according to the variation in content of characteristic radioactive nuclide and the close relationship between high - grade associated elements in ore - forming components and gold, the ground gamma - ray spectrometry and x - ray fluorescence slectrometry can be used to reveal the existence of gold mineralization rapidly in field and make semi - quantitative evaluation of gold grade. this is of great significance in guiding field geological sample collection and mountain land engineering

    文摘:通過測定特徵放射性核素的含量變化以及利用成礦組分中一些高品位共生元素與金密切的相關關系，可利用地面伽馬能譜與x熒光測量在現場快速揭示金礦化的存在，同時對金的品位進行準定量評價，以及指導野外地質采樣和山地工程。
  18. Continuous variation ( quantitative variation ; multifactorial inheritance ) a form of variation in which the characters show continuous variation within a certain range of values

    連續變異：變異的一種類型，其性狀在一定的范圍內是連續變化的。
  19. The knowledge model was developed based on the dynamic relationships between crop and environments, and quantitative representation of the temporal and spatial variation in crop growth and management indices. this provided the decision - making of dsspf with interpretation and wide applicability, thus overcoming the shortcomings of the traditional expert system with strong empiricism and localization

    知識模型是基於作物與環境的動態關系，通過定量描述作物生育和管理指標的時空規律，從而使dsspf中的管理決策支持具有解釋性和廣適性，有效解決了專家系統決策中地域性和經驗性較強的這一難題。
  20. There exists seasonal variation in the number of the species. judging from either all species of birds or that of warterbirds, the most important reason of seasonal and quantitative variation in every species lies in annual variation of the migratory birds

    衡水湖鳥類種數存在季節變化，無論是從鳥的所有種類看，還是從水鳥的種類看，鳥類物種數量季節變化的最重要原因是遷徙鳥類的周年變化。
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