離差度測量 的英文怎麼說

中文拼音 [líchādùcèliáng]
離差度測量 英文
measures of deviation
  • 離 : Ⅰ動詞1 （離開） leave; part from; be away from; separate 2 （背離） go against 3 （缺少） dispens...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 測 : 動詞1. （測量） survey; fathom; measure 2. （測度; 推測） conjecture; infer
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 測量 : measure; survey; gauge; meter; measurement; measuring; surveying; mensuration; metering; gauging;...
  1. Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced

    混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗，以及許多微波測量系統中至關重要的部件。在現代通信系統中，毫米波頻段通常採用超外差接收機，混頻器作為第一級就成為關鍵部件。由於在毫米波頻段，同頻段高性能的本振源成本高，技術難度大，採用分諧波混頻技術是解決此問題的有效途徑，只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。
  2. Previous researchers have always determined the sp atial distribution patterns ( sdp ) of castanopsis kawakamii with a sample - dis tance method. however, the distribution patterns may be affected by the quadrat si ze and, in the course of analysis, the density differences among the cluster plots are not considered ; therefore, differences of cluster plot size and the dispersi on degree among individuals of cluster plots can not be known. authers of this pa per have determined the spatial distribution patterns of castanopsis kawakamii population in different habitats by means of non - quadrat distance method and a nalysed the pattern intensity and grain of the sdp. the pattern intensity is defi ned with the relative density differences and the pattern grain can embody the d ispersion degree of the individuals in the plots, and the dispersion degree among the plots. the determined results are as follows. the intensities of the species range in order from strong to week : litsea mollifolia p. kawakamii i. purpure a r. cochinchinensis c. kawakamii c. carlessii d. oldphamii s. superba. the gra ins of the species queue in order from coarse to close : s. superba = litsea mollif olia r. cohinchinensis c. kawakamii = i. purpurea c. carlessii p. racemosam d. oldp hamii. these determined results tally basiclly with the results authers of this paper have got in determining the same plots by means of aggregate index access ing method. in view of this, it is held that the sdp of c. kawakamii is closely related to the habitats and biological features

    前人都是採用樣方方法對格氏栲種群數量的空間格局進行測定，而格局分佈有可能受樣方大小的影響，且分析過程中沒有涉及聚塊間密度差的問題，因而無法掌握種群的聚塊大小差別及聚塊內個體間的離散程度.本研究採用無樣方距離法，測定不同生境的格氏栲種群空間格局，分析格氏栲種群格局的強度和紋理.強度以聚塊和間隙的密度差來定義，紋理則是體現聚塊內個體間的離散程度與諸聚塊間的分離程度.測定結果表明，格氏栲種群格局強度從高到低排列次序為：木姜子蚊母樹冬青茜草樹格氏栲米櫧虎皮楠木荷；格局紋理從粗到細的順序是：木荷=木姜子茜草樹格氏栲=冬青米櫧蚊母樹虎皮楠.這一測定結果與作者採用聚集度指標測定相同樣地格氏栲種群空間格局的結果基本相符.因此，格氏栲空間格局類型及分佈與格氏栲生物學特性及生境的關系密切
  3. Back extraction by hno3 - hf and back extraction by concentrated hnch after lower the concentration of organic phase are studied, the method of back extration by hnorhf can not be used to icp - ms, because some zirconium is hydrolysis when hf is removed by heat. however, the method of back extraction by concentrated nitric acid after lower the concentration of organic phase can be used to icp - ms, the recovery is 93. 2 %, rsd % is 5. 24 %, the decontamination factor of uranium is 3. 2xl04, the detection limit of zirconium is 0. 04ng / ml. the method of tta extracting trace zirconium in uranium is firstly used to icp - ms, the result is satisfied, it can be used to determine zirconium in uranic production quickly and veraciously

    本文通過研究hno _ 3 - hf反萃和稀釋有機相後用濃hno _ 3反萃這兩種分離方法，認為hno _ 3 - hf反萃由於在加熱去除hf時酸度不易控制，導致鋯的部分水解，因而此方法不宜用於icp - ms中，然而稀釋有機相後用濃hno _ 3反萃法用於icp - ms測量中，全程回收率為93 . 2 ，相對標準偏差為5 . 24 ，鈾的一次去污因子為3 . 2 10 ~ 4 ，鋯的測定下限為0 . 04ng / ml ，本文首次將tta萃取分離鈾中鋯用於icp - ms測量中，結果令人滿意，此方法適用於快速、準確測量鈾產品中微量鋯。
  4. 4. the thrust measurement device was calibrated, and the accuracy was 2 % fs. at the same time the signal of thrust measurement was input to the computer. e - type chromel - constantan thermocouple was used to measure the temperature of mpt, and the accuracy was 5 % fs. the vacuum measurement was realized by using zdf - 5427m vacuometer, and the accuracy was 3 % fs

    （ 4 ）對推力測量系統進行了標定並實現了計算機採集，推力測量系統最大相對誤差為2 fs ；溫度測量目前還只限於對mpt諧振腔壁溫的測量，使用e型鎳鉻?康銅熱電偶即可較容易實現，其測量精度為5 fs ；真空測量採用zdf - 5427m微機型復合真空計，其由熱偶計和熱陰極電離計復合而成，該真空計測量控制精度為3 fs 。
  5. Backed up by the soplat theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. in the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. the fourth chapter puts forward the modified covariance extended kalman filtering ( mvekf ) against the defect of traditional extended kalman filtering ( ekf ), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as ekf, mgekf, iekf by computer simulation

    在近年來提出的基於質點運動學原理的單站無源定位理論基礎上，本文第二章提出了幾種在角度測量的基礎上增加角度變化率及相對運動的離心加速度等運動學參數的單站無源測量模型，並對它們進行了分析和模擬；第三章分別對利用角度及其變化率信息定位和利用離心加速度信息定位的可觀測性進行分析並得到了相應的可觀測條件；第四章針對傳統擴展卡爾曼（ ekf ）方法的缺點，提出了一種修正協方差的擴展卡爾曼濾波（ mvefk ）方法，並將其和ekf 、 mgekf 、 iekf等常用的單站無源定位濾波方法進行了性能模擬比較；第五章通過引入雷達機動目標跟蹤方法和模型，提出了利用角度及其變化率對機動輻射源跟蹤的多級噪聲自適應方法和imm方法；第六章主要對角度變化率和離心加速度參數的獲取技術進行了研究，提出了幾種高精度測量脈沖序列多普勒頻率變化率的方法。
  6. Aiming at the study actuality of fan performance monitoring system and analysis of fan performance curve changes affected by inlet - box and the different fixed - angles of guide blades in the course of installation, a fan flow monitoring model based on rbfnn in whole flow zone was established in this thesis. in the model, the method of no throttle and fan performance curve were used as basis. and on the basis of that model, fan performance curves of 4 - 73no. 8d were approached with experimental data of different speed, different opening - angles of guide blade and different resistance of pipeline, the precision and the error law of model were studied

    本文針對電站風機性能監測系統研究較少的現狀，在實驗的基礎上分析了現場加裝進氣箱和由於安裝造成的導流器葉片開度不一致對風機性能曲線的影響，並在此基礎上採用無節流方法測量流量，以風機調節性能曲線為依據，建立了基於徑向基函數（ rbf ）神經網路的風機流量全程監測模型；以實驗室4 - 73no . 8d離心風機為研究對象，探討了rbf神經網路差壓模型在變轉速、變導流器開度和變管網阻力等工況下的應用精度和誤差分佈規律；最後用visualc + +語言開發了風機性能在線監測系統。
  7. It is discussed that the present harmonic analyzers do n ' t satisfy the requirements of china standard for harmonic measure of quick disturbance harmonic load. the measurement error brought about by the harmonic analyzers adopting ft or fft algorithm is analyzed. a cycle discrete fourier algorithm that should n ' t be effected by aperiodic component is presented, and the results of simulation show that it has higher accureacy

    本文對電力系統諧波的測量方法，數據處理及電力牽引負荷對電力系統的影響進行了研究，論述了目前國內外生產的諧波分析儀用於快速波動諧波負荷的測量不滿足國標的要求，分析了諧波分析儀普遍採用的ft或fft演算法所產生的測量誤差，提出了一種不受非周期分量影響的全周波離散傅里葉演算法，模擬結果表明精度好。
  8. The error sepaation technology ( est ) and a special data processing program have been adopted to improve the measurement accuracy sucessfully

    該法運用誤差分離技術，並且編制了一套數據處理程序，有效地提高了測量準確度。
  9. Several materials with large coefficient of expansion were selected to make packaging components, and it was found that the packaging materials have good temperature sensitivity and compatibility with optical fibers. experimental accuracy and repetition of fbg temperature sensitivity and compensation were discussed. have selected several materials which has bigger coefficient of expansion to do packaging components, have made many temperature experiments, there have not flaws, such as aging, crackle, absciss layer, packaging materials have good temperature sensitivity and compatibility with optical fiber ; have designed the simple and practical packaging components, have performed a serials of experiments about accuracy and repetition of fbg wave - length, have obtained the first step conclusion ; have analyzed the result and made comparison between the result of different experiment, have summarized the best packaging effect and several rules to reduce mistskes

    本文所做的主要工作包括以下幾個內容：一、選取了常見的熱膨脹系數大的材料製作封裝元件，經過多次一80到80反復測試，封裝元件沒有出現老化開裂、封裝裂紋、空洞、離層等缺陷，封裝材料具有良好的溫敏穩定性及復用性，與光纖相容性較好；二、對光纖光柵進行簡單、實用的封裝處理，就封裝效果的優劣性、波長測量的準確度、重復性和封裝時產生的波長損失等方面進行了一系列的實驗，得出了初步的結論；三、對溫敏和溫度補償式封裝的實驗數據進行了詳細的分析和對比，從數字上對溫變過程中光纖光柵中心波長的改變及溫變曲線進行了定量的分析，在大量實驗數據分析結果的基礎上，總結出哪種材料封裝效果更好，以及如何有效的減小實驗誤差。
  10. In order to construct the perfect technique for this measurement, the theory and the experiments were extensively and deeply studied

    本文以建立較完善的激光差分干涉測量稠密等離子體密度技術為目的，進行了深入而且廣泛的理論和實驗研究。
  11. Theoretically, using the theory of mutual effect between laser and plasma, the rule of laser propagating in plasma, and the principle of differential interferometry, the basic model of differential interferometry for plasma density measurement was built

    理論上，運用激光與等離子體的相互作用原理、激光在等離子體中的傳播規律、以及差分剪切干涉測量技術原理，建立了使用差分干涉技術測量稠密等離子體密度的基本模型。
  12. In order to evaluate aiming error of missile on the warship or on the submarine, including the error of warship position, the error of reference azimuth and the error of transfer measurement given by the navigation system, and try to divided them from the general error, it is highly important that we estimate and evaluate missile system of mobile bedding launching

    為了評估從艦船潛艇上發射導彈的瞄準誤差，包括艦船導航系統給定的船位誤差、基準方位誤差及其傳遞測量誤差，並試圖把它們從總的瞄準誤差中分離出來，這對于動基座發射導彈武器的瞄準精度的評價極為重要。
  13. Analyze item by item the position of unintact cycle, the running clearance of unintact cycle, locking - deform, datum dimension regulating, repeatly install, power voltage wave and marking running etc. at the same time, we give the calculating formula to calculating the running marking random error, and use it to calculate the system error of big diameter measure instrument - - datum dimension frame error, gyro - wheel diameter error, error caused by circumstance temperature, error caused by backing distance, angle error, delay error of data collecting circuit, lathe main shaft running error, workpiece install partial error

    對不完整圓的位置、不完整圓的轉動間隙、鎖緊變形、基準尺調整、重復安裝、電源電壓波動、標記轉動等隨機誤差進行了逐項分析，並給出轉動標記隨機誤差的計算公式。對大直徑測量儀的系統誤差?基準尺尺架誤差、滾輪直徑誤差、環境溫度引起的誤差、後退距離引起的誤差、角度誤差、數據採集電路延時誤差、車床主軸回轉誤差、工件安裝偏心誤差分別進行了計算，最後對誤差進行合成。
  14. Multivariate morphometrics was conducted on the endemic asian genus sinibrama wu, 1939 in east asia in order to investigate the morphological variations among the 4 nominal species and subspecies known from south china. principal component analysis ( pca ) was performed respectively for seven meristic and thirty - two morphometric characters that were based on 224 specimens

    運用多變量形態度量學方法，研究東亞特有魚類類群?華鯿屬魚類的形態差異，對其在分類學上存在疑問的物種的不同地理居群的18個框架測量距離、 14個常規測量距離和7個可數性狀進行了主成分分析。
  15. Through the study with non - linearity friction on simulation model of the stabilized system, in theory the analysis of the angular acceleration loop ' s contribution is given. in testing platform, the measure devices of angular acceleration and velocity constitute the double loops, they are angular acceleration loop and angular velocity loop. and this experiment gives the proof that the angular acceleration loop could eliminate the errors which are taken by the motor ' s reversing

    最後，本文在理論上分析角加速度環對隔離度的貢獻；通過對含有非線性摩擦力矩的平臺穩定系統模擬模型的研究，從理論上驗證角加速度環具有克服摩擦力矩的能力；在實驗轉臺上加入由線加速度計構成的角加速度測量裝置，並與測速機構成角加速度環、角速度環雙環結構，驗證了角加速度環對電機換向誤差的消除作用。
  16. By using auto - adjusting boundary conditions and the method of three cubed spline curve fitting, the system software can recover both of the horizontal and vertical beam profile. the measurement system can also measure the beam landing screen error of cpt. it provides a important measurement and analysis tool to improve the performance of electron gun and dy, and improve the definition of cpt

    系統軟體中，提出了採用動態確定邊界條件，通過對離散采樣點的三次樣條插值曲線的擬合恢復束斑x和y方向的輪廓，本系統既能準確客觀地描述電子束輪廓，又能夠準確快速地測量電子束著屏誤差等多種參數，為cpt電子槍和偏轉系統的性能改進與解析度的提高提供了有力的測試分析和研究手段。
  17. Firstly, in order to meet the requirement in application, the influencing factors for defocus measurement with one - way defocused detector are analyzed and the influencing regularity of detector position are discussed, after that the relationship between defocus errors and output signals is given too. according to the optimization results, the experimental device is established for this paper

    首先，本文從工程應用角度出發，通過分析單向離焦檢測的誤差影響因素，討論了探測器位置誤差對測量的影響規律，給出了離焦量與測量信號的輸出關系，優化設計了檢測光學系統，搭建了實驗裝置。
  18. An on - line minimum - variance estimator was developed for thrust acceleration applied to orbit transfer using discrete - time radar measurements. the mass - flow - rate of propellant was selected as a state variant, which was estimated by employing an integral state model and ekf filter. the variation equations for measurement vector to mass - flow - rate have been established to linearize the discrete - time measurement equations. the algorithm has applied successfully to maneuver process in commanding satellite into geo - stationary orbit. the results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process

    飛行器軌道機動過程中，為跟蹤、定位機動目標和干預機動控制過程，需要統計處理離散的雷達觀測量實時估計推進發動機的推力，進而確定飛行器的瞬時軌道參數.本文所述演算法是該工程問題的探討和解決方案.文章建立了軌道機動過程中連續變質量運動模型和離散雷達量測模型，推進發動機的質量秒耗量作為表徵推力加速度的一個近似常量，應用擴展卡爾曼濾波對離散的雷達測量數據進行順序統計處理給出秒耗量的最小方差估計;文章詳細地推導了線性化量測模型的變分方程和觀測矩陣;模擬結果表明該演算法能快速、準確地估計推進發動機的質量秒耗量和向機動目標施加的實際推力
  19. Chapter four is focused on this and it gives us a very detailed introduction to the calibrating idea and algorithm realizations. it also introduces the calibrating performances by using three different off - line calibrating algorithms along with the simulation results

    文章第四章針對離線校正的思路與演算法作了詳細地介紹，比較了三種離線校正演算法在不同的誤差模型與噪聲模型中對和差接收通道校正後角度測量精度變化的情況。
  20. Abstract : the new method of measurement profile error of any line with error separation technique is studied. based on developing mathematical models, computer imitation is made

    文摘:研究了在數控加工中利用誤差分離技術測量線輪廓度誤差的新方法，在推導數學模型基礎上進行計算機模擬。
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