精確測定大小 的英文怎麼說

中文拼音 [jīngquècèdìngdàxiǎo]
精確測定大小 英文
precision sizing
  • 精 : Ⅰ形容詞1 （經過提煉或挑選的） refined; picked; choice 2 （完美;最好） perfect; excellent 3 （細）...
  • 確 : 形容詞1. （符合事實; 真實） true; reliable; authentic 2. （堅固; 堅定） firm
  • 測 : 動詞1. （測量） survey; fathom; measure 2. （測度; 推測） conjecture; infer
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 小 : Ⅰ形容詞1 （體積、面積、數量、強度等不大） small; little; petty; minor 2 （年紀小的; 年幼的） youn...
  • 精確 : accurate; exact; precise
  • 測定 : determine; determination; setting-out; admeasurement; assignment; assay; finding
  1. Firstly, by numerical and theoretical analysis, the author compares some existent confidence intervals, for example, " exact " confidence interval, wald confidence interval and bayesian confidence interval, and finds some deficiencies points of the confidence intervals, whose modification version has been proposed. also, several better confidence intervals such as are also presented. secondly, for given confidence coefficient and interval width, the author constructs a class of asymptotical two - stage interval estimate procedures. at the same time, under varies restriction of confidence coefflcientent interval width, the optional sample size of the first stage has been computed by numerical computation. the numerical computation shows that the method considered in this dissertation have good properties and applied value

    同時，由於poisson分佈的特性，我們知道不存在其參數區間長度小於0 . 5的置信區間，基於這些情況，我們主要展開了以下兩個方面的研究：一是利用數值計算分析與理論分析的方法對現有的若干置信區間如「精確」置信區間， wald置信區間， bayes置信區間等進行分析比較，發現了一些缺陷，針對這些缺陷，我們進行適當的修正，並得到幾種性質較好的置信區間如：修正大樣本區間jeffreys原則下置信區間二是針對已給定的置信系數與區間長度，我們提出了一種漸近的兩階段區間估計程序，並利用數值計算的方法，在各種置信系數與區間長度限定下，算出了最優的第一階段觀測次數（抽樣量） ，大量數據表明，本文考慮的方法性態良好，具有應用價值。
  2. Application of microsatellite dna polymorphisms and dna fingerprints to inbred strain mice and rats to screen the exact, dependable, particular genetic monitoring marker method of laboratory animal, the author had studied the application of microsatellite dna polymorphisms and dna fingerprints to inbred strain mice and rats, and compared the two methods with the biochemical marker enzyme method. the study had established the foundation of the molecular genetic monitoring marker method of laboratory animal

    本文通過對dna指紋技術和pcr擴增微衛星dna技術在近交系大、小鼠遺傳檢測中的應用研究，並與生化位點標記分析法進行比較，旨在篩選出具有精確、可靠、特異性好的實驗動物遺傳檢測方法，為建立分子生物學實驗動物遺傳質量監測技術和標準奠定基礎。
  3. In chapter iv, a new method of eyes location is provided. it detects the edg of human face image with wavelet transform in the first. then it begins to statistic the gray value of the row and list

    本文第四章提出了一種基於簡單背景的人眼定位演算法，用小波變換對人臉圖像進行邊緣檢測，對得到的結果進行行列統計，得到人臉的大致位置，再用模板匹配進行最後的精確定位。
  4. Second part - the main contribution and research results of this paper are focused on as follows : ( 1 ) how to use the measurements of a dual frequency gps receiver to determine the ionospheric delay correction model for single frequency gps of a local range ; ( 2 ) how to separate the instrumental biases with the ionospheric delays in gps observation ; ( 3 ) how to establish a large range grid ionosphere model and use the gps data of chinese crust movement observation network to investigate the change law of ionospheric tec of china area ; ( 4 ) how to improve the effectiveness of correcting ionospheric delays for waas ' s users under adverse conditions. ( 5 ) how to establish the basic theory and the corresponding framework of monitoring the stochastic ionospheric disturbance using gps ( 6 ) how to improve the modelling ability of ionospheric delay according to its diurnal, seasonal, annual variations based on gps ; ( 7 ) how to meet the demand of correcting the ionospheric delay of high - precision orbit determination for low - earth satellite using a single frequency gps receiver 1 extracting ( local ) ionospheric information from gps data with high - precision the factors are systematically described and analyzed which limit the precision of using gps data to extract ionospheric delays

    二、具體研究工作的系統報告，主要集中在以下幾方面：研究如何利用單臺雙頻gps接收機的觀測信息確定電離層延遲改正模型，為小范圍的單頻用戶服務；研究如何實時分離gps觀測中的儀器偏差與電離層延遲；研究如何建立較大區域的電離層格網模型，進而初步設想利用中國地殼運動觀測網路深入研究我國領域的電離層的電子濃度變化規律；研究單頻用戶在不利條件下，如何更好地利用電離層延遲改正信息；研究利用gps監測隨機電離層擾動的基本理論和框架方案；研究如何綜合顧及電離層的周日、季節和年變化，進一步提高利用gps模擬電離層延遲的能力；研究如何實現星載單頻gps低軌衛星的精密測軌中的電離層延遲改正要求。
  5. In order to utilize the frquency resource adequately and increase the capacity of mobile communication system, the wireless electric wave propagation of existing mobile system always adopts the microcell structure. forecasting the path loss characteristic of electric wave accurately can provide the necessary condition for the layout and design of wireless network, at the same time it is a precondition for the research on the microcell mobile system. the methods of forecasting of wireless electric wave propagation can divide into two parts : one is pluse and respond, that is establish the empirical model based on experimental and statistical data ; the other is ray tracing method, that is establish the deterministic model based on theoretical analyse. the paper discuss the characteristic of wireless signal electric wave transmition in symmetrical atmosphere of earth, and introduce the common path loss transmition model in land mobile communication system, also point out the localization of these models based on experiential methods

    而精確預測無線電波傳播路徑損耗特性，則為合理的微蜂窩無線網路規劃、設計提供了必要條件，同時也是研究微蜂窩移動通信系統性能的前提。無線電波傳播預測的方法分為兩類：一是用沖激響應法，即根據實驗、統計所得數據建立經驗性傳播預測模型；另一種是用射線跟蹤方法，即依據理論分析來建立確定性的傳播預測模型。本文首先討論了在地球表面均勻大氣中的無線電波傳播的基本特性，介紹了陸地移動通信系統中常用的幾種電波傳播路徑損耗經驗性預測模型，並指出了這些經驗性傳播模型對于微蜂窩小區無線電波傳播特性研究的局限性。
  6. The nucleotide ( nt ) sequence of the insert in phz1754 is 2299bps in size. computer assisted analysis of the sequence revealed an open reading frame ( orf ) with a g + c content of 70. 3 % that would encode a protein of 552 amino acids ( aa ). the nt seque nce comparision revealed that the orf in the sequenced region exhibits 85 % dna sequence homology with the cholesterol oxidase gene choa of streptomyces sp

    對phz1754進行外切核酸酶（ exonuclease ， exo ）順序缺失，獲得單向長度漸減重疊的系列突變體，核苷酸序列測定顯示出該ecor - sal片段的精確大小為2299bps ， frameplot程序分析揭示出該區域一個完整的開放閱讀框（ orf ）的存在，其大小為1656bps ， g + c含量為70 . 3 ，編碼552個氨基酸，利用blastsearch程序將orf的核苷酸序列及推導的氨基酸序列與因特網上基因及蛋白質數據庫進行綜合比較，發現無論在核苷酸水平還是在蛋白水平上，該orf均與膽固醇氧化酶表現出同源性，而且與鏈黴菌膽固醇氧化酶同源性最高，說明該orf編碼膽固醇氧化酶基因。
  7. In some projects charged by our lab such as national 863 project - " crop planting management components based on weather analyse ", anhui provincial 95 key project - " agricultural meteorology disaster evaluation system base on gis in anhui province " and the project " small coal mine security management and decision system based on gis in anhui province ", this paper combines the theory and arithmetic of rough set with gis and data mining in idss, investiges the application of rough set theory to precision analysis of attribute data and logical operation in gis, analyzes the logical operation based on rough set ( logical union, logical intersection, logical complement, mixed logical operation etc. ), so that it can give a method y to research the gis attribute data and the uncertainty of attribute data after superposition operator, so as to express the roughness and illegibility of attribute data more accurately

    在完成試驗室所承擔的國家863項目「基於氣象分析的農作物種植管理軟構件」 、省95攻關項目「基於gis的安徽省重大農業氣象災害測評系統」和「基於gis的安徽省小煤礦安全管理決策系統」等項目中，將粗糙集理論和演算法與gis 、智能決策系統中的知識發現等相結合，對粗糙集理論在gis屬性數據和邏輯運算精度分析中的應用情況進行了研究，分析了基於粗集的gis邏輯運算（邏輯並、邏輯交、邏輯補、混合邏輯等） ，從而為研究gis屬性數據及其疊加運算后屬性數據的不確定性提供了一種方法，能比較準確地表達屬性數據的模糊性和粗糙性。
  8. Abstract : an imidazole - catalyzed acylation method of phthalic anhydride is applied to the determination of hydroxyl values of reinforcing agent is211. the analytical error is 5. 0 10 - 3. the relative standard deviation of the method is less than 0. 04 and its coefficient of variation is not more than 5. 0 10 - 3. hydroxyl values determined in different batch samples meet the design requirement completely. this method is rapid and simple, it is adaptable to conventional analysis

    文摘:以咪唑催化鄰苯二甲酸酐酰化的方法測定增強劑is211的羥值，準確度高，分析誤差為5 . 0 10 - 3 ；方法精密度好，標準偏差小於0 . 4 ，變異系數不大於5 . 0 10 - 3 ，測定不同批號試樣的羥值完全符合商標值，方法快速、簡便，適用於常規分析。
  9. There are errors during the measurement for both methods. the wavelet is introduced to de - noise the measured coordinates due to its sensitivity to the white noise on different scales. more precise coordinates of the cabin could be got after de - noise by wavelet

    西安電子科技大學博士論文3 .由於立體視覺和激光全站儀測量得到的坐標均有誤差，採用小波去噪技術降低測量誤差，可更精確地確定饋源艙的位置及運行軌跡。
  10. Aiming at the control feature of large ship, the authors designed a 2 - rank derivative multi - step neural network predictive model and the algorithm of the large delay ship ' s course, and presented a fuzzy control autopilot scheme based on the model with rbf neural network and fcmac controller, it solved problems of model online identification and controller online design in traditional adaptive control, so that the high precision output follow - up control of large ship with large delay and uncertain nonlinear features can be realized

    摘要針對大型船舶控制特性，設計了船舶航向的神經網路二階導數多步預測模型及其辨識和預測演算法，提出基於徑向基函數神經網路多步預測模型和模糊小腦模型關節神經網路控制器的大時滯船舶航向模糊控制自動舵方案，解決傳統自適應控制中模型的在線辨識和控制器的在線設計問題，以達到對具有大時滯、不確定非線性特性的大型船舶實現高精度輸出跟蹤控制。
  11. A new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source

    本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。
  12. Abstract : a new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source

    文摘:本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。
  13. Firstly, on the basis of meeting domestic market need, we would export properly some wheat to the counties of southeast asia. secondly, the wheat quality and supply capability would be improved steadily through variety breeding, production base establishing and extending technology of standardization cultivation. thirdly, wheat standard system should be consummated in order to guide the production and processing of wheat, in the meanwhile, it could be used as the technology barrier that could restrict wheat importing

    為盡快提高我國小麥國際競爭力，今後應採取如下戰略和措施：一是要制定立足於國內主戰場，適當向東南亞國家出口的發展戰略；二是通過加強品種選育、基地建設和標準化栽培等措施，穩定提高小麥品質和供貨能力；三是完善我國小麥各類標準，為生產和加工提供科學依據，同時也作為限制國外小麥進口的技術壁壘：四是加大小麥加工的技改力度，發展小麥精深加工：五是建立健全小麥品質檢測體系，加強市場信息服務；六是加強技術研究和節本增效技術的推廣，降低小麥生產成本；七是研究小麥tck的預警與控制，確保我國小麥安全。
  14. The claim has been made upon the results that the wmt method should be used in the area near the vertical, while the phase difference method in slant beams and a rule has been given to select among those two methods according to the " effect value " on condition the depth is known for the consideration of improving the measurement precision, this paper studies the factors which affect the toa measurements, and three expressions of precision has been introduced as to applications of phase difference method, this paper introduces an automatic hunting method based on amplitude power to get the range of echo arrival

    採用方差分析的方法，使用重復海試數據對wmt法和相位差法的優劣進行了分析，指出了垂直附近應該使用wmt法，而傾斜波束應該使用相位差法；給出了在深度真實值已知前提下wmt法和相位差法使用的判決準則，即根據效應值的大小來選擇。本文從提高測量精度角度出發，分析並驗證了影響toa測量精度的因素；給出了三種精度表示。在應用相位差法時，引入了一種基於幅度能量的區間自動搜索方法；實驗表明該方法能很好地確定回波到達的大概時間范圍。
  15. Aims at application, we mainly discuss face detection in two circumstance. ( 1 ) in the gray image, we use difference image in multi - frames, then get the edge of the face, we make the raw - location to ensure the approximate position of the face, next, we use the template of the face to occlude the pseudo face region and get the region which near the exact face region. ( 2 ) use method of two template matching, first, we get the face template from many face average, second, we copy the eye section of the face template then get the eye template

    文中首先介紹了圖像預處理的各種方法，重點介紹了圖像分割和人臉檢測定位，針對實際應用的要求，著重處理了兩種情況的人像檢測定位： （ 1 ）在灰度圖像下對連續輸入的多幀進行差分，對于得到的邊緣進行處理初步確定人像的大概位置，然後採用模板匹配進行精確定位。 （ 2 ）應用雙模板匹配的方法，由多人臉平均得到人臉模板和眼睛模板，在檢測中採取了首先使用尺度相對較小的雙眼模板搜索候選人臉，再用人臉模板匹配進一步篩選候選人臉的方法。
  16. It ’ s been proved by the experiments that detecting apparatus system can be used to detect the laser beam divergence. the detecting results are very close to the given, attain the certain accuracy

    實驗表明，本文設計的雙探頭測量激光發散角的裝置能夠較準確的測量出發散角的大小，測量結果達到了一定的精度。
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