線向標 的英文怎麼說
中文拼音 [xiànxiàngbiāo]
線向標
英文
alignment marker-
A normal transform is introduced, and there are enough much grids in the region between the critical layer and the wall, where the variation of the disturbance is the quickest. the finite - difference of governing equations with fourth - order accuracy in the normal direction is utilized in full regions including points close the wall, and is very important for accurately discreting equations. the combination of global and local methods is implemented, and a new iterative formula is derived
對于曲線坐標系下的拋物化穩定性方程，文中發展了求解的高效數值方法:引進法向變換，使得在臨界層與壁面之間的擾動量變化最快的區域有更多的法向網格點;導出包含邊界鄰域在內的完全四階精度的法向有限差分格式，這對方程精確離散至關重要;採用全局法和局部法相結合的方法及其新的迭代公式，大大加速收斂並得到更精確的特徵值。This study made a conclusion ? amely in order to realize following the geological target while drilling, on the basis of making a better geological and drilling design for horizontal well, we must make full use of mwd, lwd and integrate logging to carry out lithfacy identifying in real time, the lwd interpretation and formation evaluation, to set up geological model of target formation, to select geosteering marked formation and compare simulative curves with lwd curves f to fix on the drilling direction of bit upper and declination, the position in target oil - gas layer, to revise borehole track in real time, to make it extend in reservoir better interval as possible
研究認為，在做好水平井地質設計和鉆井設計的基礎上，要實現隨鉆跟蹤地質目標鉆井，必須充分利用隨鉆測量、隨鉆測井和錄井等資料，從實時巖性識別、隨鉆測井解釋和地層評價、目標層地質模型建立、導向標志層的選取及模擬曲線對比等方面入手，確定鉆頭上下傾鉆進方向及在目標層中的位置，以實時調整井眼軌跡，使其盡可能在儲層物性較好的部位延伸。This paper, based on normalizing well logging data while drilling and correcting depth into true vertical depth and calculating reservoir parameters and etc, combining the practical ease of mobei oilfield, extracted logging and geological pattern characteristic of target oil - gas formation and geosteering mark formation, and used bp neural network and regressive analysis to create predicting mode of geosteering parameter to build relevant contrast curve ; adopted geometry geosteering method to fix on die drilling direction of bit upper and declination, the position in reservoir, to judge the real drilling case. all finely solved the problem to follow the geological target while drilling for three horizontal well these methods improve the drilling horizontal well ability by using the techniques to follow the geological target while drilling, and then it is convenient and practicable
本文在開展隨鉆測井資料的標準化和斜井校正及儲層參數解釋與含流體性質判釋等工作的基礎上，結合研究工區莫北油田的實際情況，提取了目標油（氣）層和導向標志層的測井地質模式特徵，並採用bp神經網路法和回歸分析法建立了地質導向參數的預測模型、構造了相應的對比曲線；採用幾何導向法確定鉆頭上下傾鉆進方向及其在目標層的位置，以判斷實際鉆進地層情況，很好地解決了研究工區三口水平井的隨鉆跟蹤地質目標的問題。This paper discussed the coordinate transformation method of wgs84 coordinate system to 1954 - beijing gauss grid coordinate. introduced transformation model of wgs84 to beijing 54 and computing method of transformation parameter. according to different model and computing method, computed and compared with the result combine real data
本文詳細討論了wgs84大地坐標轉換到北京54坐標系下的高斯平面坐標的方法，重點介紹了wgs84和北京54的空間直角坐標的轉換模型及轉換參數的計算方法，並根據不同的模型和計算方法結合實際數據進行計算和結果的比較，認為採用基線向量求解的四參數模型具有較高的轉換精度，分區變換和提高控制點精度也能提高轉換的精度。Broadcasting standards of marine radio beacon. differental global positioning system
沿海無線電指向標差分全球定位系統播發標準Calculation of side distance of curved roadway demarcated by chord line
弦線法標定曲線巷道方向邊距的計演算法Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed
本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上，以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型，通過攝動方法和有限體積法，首次對各種截面（圓截面、橢圓截面、環形截面、矩形截面）旋轉曲線管道內充分發展流動的流動結構和傳熱特性（包括耦合對流傳熱特性）以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析，詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響，獲得了若干創新性成果。Standard practice for sealing lateral connections and lines from the mainline sewer systems by the lateral packer method, using chemical grouting
用化學灌漿的側向灌漿機法密封測量連接件和主要排污系統管線的標準實施規程In arbitrary curvilinear coordinate systems, three dimensional turbulent combustion flow fields of the three kinds of turbofan engine afterburner with the longitudinal heat shield 、 outer cold flow and the jet nozzle are simulated. the three - dimensional body - fitted grids are generated by an elliptical grid generation procedure and zone method
本文在任意曲線坐標系統下對三種帶有縱向隔熱屏、外冷卻通道和尾噴管的渦扇發動機加力燃燒室的三維紊流燃燒流場進行數值模擬。City bypasses and spurs have triple digits and are numbered odd or even depending on their directional orientation
城市的旁路和支線的標號都是三位數，是奇數還是偶數，取決於它們各自的走向。Rotating electrical machines - part 8 : terminal markings and direction of rotation
旋轉電機.第8部分:線端標記和旋轉方向This thesis analyzed various error resources in gps surveying and advanced appropriate correction measures ; it introduced theory and method that estimate parameter in reliability study, and then, deduced adjustment mathematic model of gps network ; based on analyzing characteristics of reliability study of gps network and outlier analysis, it carried profoundly out study on issue about reliability of gps network, deduced and summarized target of reliability of gps network, including redundant observation component of gps baseline vector and inside & outside reliability index, advanced a theory about reliability of gps network based on correlative analysis, and summarized methods that improve reliability of gps network ; it worked out a software of reliability analysis about gps observation, which made reliability analysis automatic and convenient
論文分析了gps測量中的各種誤差來源，提出了相應的改正措施；介紹了可靠性研究中參數估計的理論和方法，進而推導出gps網平差的數學模型；在分析了gps網可靠性研究和粗差分析特點的基礎上，對gps控制網可靠性問題進行了深入的研究，推導總結出了gps網可靠性指標，包括gps基線向量的多餘觀測分量、內部可靠性和外部可靠性指標，提出了基於相關分析的gps控制網可靠性理論，總結出了提高gps控制網可靠性的措施；編制出了gps觀測數據可靠性分析軟體，使可靠性分析自動方便。Terminal markings and direction of rotation of rotating electrical machines
電機線端標志與旋轉方向Rotating electrical machines - part 8 : terminal markings and direction of rotation ; corrigendum 1
旋轉電機.第8部分:線端標志和旋轉方向.修改件1In a three - dimensional ocean model with curvilinear coordinates horizontally and a coordinate vertically, the adapted grids at a layer for interpolation in the eulerian - lagrangian method ( elm ) is unreasonable over steep topography, because the vertical distance between the adjacent grids in the same a layer is too large
摘要在水平曲線坐標和垂向坐標的三維海洋模式下，歐拉拉格朗日方法的插值如果在-面相鄰網格之間進行，那麼在水深變化劇烈處，由於-面相鄰網格之間的垂向距離較大，插值依據會顯得較不合理。Using spss, a statistic analysis software, the paper develop and calibrate generalized liner accident regression model for three type of roads, including two motor vehicle lanes and two non motor vehicle lanes, two lane road with road marking and two lane road without road marking
利用spss統計分析軟體，建立並標定了橫斷面為雙車道對向車道間有標線車道與硬路肩之間有標線有標線道路、雙車道對向車道間有標線道路和雙車道對向車道間無標線道路的事故廣義線性回歸模型。6. a 3 - d flow and sediment model in curvilinear collocated grid is developed from 2 - d model
（ 6 ）非交錯曲線網格三維水流泥沙數值模型，採用擬合曲線坐標和垂向坐標變換。R. g. radio direction finding station
定向性無線電指向標Rotating electrical machines - terminal markings and direction of rotation
電動旋轉機器.接線端標志與旋轉方向Introduction, reviews and concepts of functions, differentiation, vector algebra, vector differetiation, vector integral, orthogonal curvilinear coordinates
課程介紹及授課計劃、函數觀念及復習、微分、向量代數、向量微分、向量積分、正交曲線座標、微分方程式。分享友人