曲率值 的英文怎麼說

中文拼音 [qūlǜzhí]
曲率值 英文
zero of curvature
  • 曲 : 曲名詞1 （一種韻文形式） qu a type of verse for singing which emerged in the southern song and ji...
  • 率 : 率名詞（比值） rate; ratio; proportion
  1. Rolling bearings. chamfer dimensions. maximum values

    滾動軸承.曲率尺寸.最大值
  2. The le - an oil field is located on the southern slope of dong - ying sag. there are two sets of ek basalt in its western block. depending on the drilling, the logging and the seismic date, tha ek basalt has the characteristics of high resistancs, the low sound wave defferance and faradic conductance, the smooth curve of self potential

    樂安油田位於東營窪陷南斜坡上，其西區發育了兩套孔店組玄武巖，根據鉆井、測井、地震資料，孔店組玄武巖具有電阻率高、聲波時差值和感應電導率值低、自然電位曲線平直的特點，地震波呈板狀強反射；沉積期該區有有二次火山活動，玄武巖平面分佈比較穩定，噴發方式為「裂隙式噴溢」 ，火山口分別位於草12和草31井附近。
  3. In chapter 3, we will estimate the first eigenvalue of laplacian from below on manifolds with a little negative curvature. in chapter 4, we will prove the existence of bounded nontrivial harmonic functions on some classes of complete manifolds which will generalize the results of s. y. cheng ' s

    在第三章，我們將給出具有小負曲率的流形上laplace運算元的第一特徵值的下界估計；第四章，我們會給出一類完備非緊流形上非平凡的有界調和函數的存在性，推廣了s . y . cheng的結果。
  4. Constrained conditions consist of data interpolations ( interpolations to data points or to one order and curvature at data points ), shape - preserving interpolation and smoothing or fairing fitting

    約束條件包括數據插值（可以是對數據點或數據點處的一階導和曲率等的插值） 、保形插值和光順擬合等。
  5. Based on the tribological principle and the theory of contact mechanics, it is feasible to adopt curvature - changing structure in the rock - bit journal bearing system. the structure and coupling relationship of curvature - changing journal bearing under the condition without friction have been analyzed and three kinds of sub - form structure configurations, namely, the pseudo - curvature - changing structure, the conformable curvature - changing structure, and the clearance curvature - changing structure, been differentiated according to the contacting features. the shape optimization and pre - running - in regulations of the contact surface of curvature - changing journal bearing under friction condition have been established. the results of rock bit journal bearing test indicate that the tribological behavior of the bearing can be effectively improved by curvature change based on both designing and pre - running - in

    基於摩擦學原理和接觸力學理論，提出了可在牙輪鉆頭滑動軸承中採用變曲率結構.在不考慮摩擦的情況下，就結構設計和配合關系等問題進行了分析討論，劃分了準變曲率、吻合變曲率以及間隙變曲率等3種結構形式；針對考慮摩擦時的變曲率結構，提出了接觸形狀優化和預磨合的實施方案.鉆頭軸承試驗結果表明，無論是預設計變曲率還是預磨合變曲率，都能改善軸承摩擦副的摩擦學特性，因而值得進一步研究和推廣
  6. On the other hand, the conformal deformation ' s problem is to find a metric on h2 ( - 1 ), conformal to g, with the given function k as its gaussian curvature, that is, it is important for us to study the solvability of the conformal gauss curvature equation in geometry analysis. the problem that the conformal gauss curvature equation may have a solution for every nonegative holder continuous function k ( x ) is also an open problem

    ） = e ~ （ 2u ） g使k是（ ? ）的高斯曲率，即共形高斯曲率方程的可解性研究是幾何分析中的一個重要問題。當預定的函數k取正值時，共形高斯曲率方程解的存在性命題作為一個猜測至今未得到解決。
  7. It studies and puts forward the flexibility difference curvature method, and many simulated damage examples show that the method has notable advantages such as high damage identification sensitivity, strong reliability, and visualization and simplicity in amount and graph analysis

    本文研究並提出了柔度差值曲率法，多個模擬損傷實例說明該方法具有損傷識別靈敏度高、可靠性強、數值和圖形分析直觀簡便的顯著優點。
  8. A comparison of keratometer measurement and corneal topography in the measurement of keratometer before and after orthokeratology

    角膜塑形術治療前後角膜曲率計和角膜地形圖測量值比較
  9. Road testing. measurement of a rolling load deflection. part 7 : determination of deflection and curvature values using curviameter

    路面試驗.滾動加載撓度測量.第7部分:用曲率計測定撓度和曲度值
  10. The contacting measurement method with a double probe is put forward after the detailed analysis of the state - of - the - art measuring methods of the thickness of wall. firstly, the theory - profile generatrix is built, and then the movement curve of the track of joint center is constructed, which aims at making the joint center move along the movement curve and keep the fixed sensor touching the wall. the measuring sensor examines the line in its normal direction of the interior wall all the time, the data from the sensor is the thickness value of the wall

    論文通過分析國內外變曲率回轉體壁厚測量的現狀，提出了雙測頭接觸式測量方案:通過構造理論輪廓母線，建立鉸鏈中心的運動曲線，使鉸鏈中心始終沿運動曲線運動，以保證固定觸頭與傳感器測頭的連線始終在內壁法線方向上，從而傳感器測頭所得的數值即為壁厚值，該方案經模擬測試實驗取得了預期效果。
  11. The probability distribution function and the characteristic values of the curvature ductility factor are obtained

    近似得出曲率延性系數的概率分佈函數和特徵值。
  12. Because the data mutate on the position that is the edge, the normal curvature on some orientation changes from positive to negative. so it is thought whether some point is judged the edge - point by this character

    由於邊緣是圖像上像素發生突變的位置，所以在圖像曲面上某一方向的法曲率值會出現由正到負的變化，故此應用這個性質來判斷曲面上某點是否為邊緣點。
  13. We calculated the surface subsidence, horizontal displacement, incline, and current curvature using the groundwater drawdown, conical depression influence radius of water cone and ground property

    根據地下水降深、降落漏斗影響半徑、巖土工程地質性質，計算降水引發的地表沉降值、水平移動、傾斜、曲率現狀值。
  14. The moment - curvature relationship chosen is assumed to have a horizontal branch beyond yield, with the moment remaining constant at the ultimate value

    所選用的彎矩曲率關系是假定超過屈服後有一個水平段，即彎矩保持在極限值不變。
  15. Presents a new method of constructing boundary conditions for nurbs interpolotion, which makes it unnecessary to know the deriratives of curve ends, and solves the problem of zero curvature at curve ends, and enables designers to control the shape of the two end segments of curve easily and freely by simply adjusting the curvature coefficients and discusses the influences of curvature coeffients on the shape of the end segments of curve

    提出一種新的用於nurbs曲線插值的構造邊界條件的方法.該方法不需要已知曲線端點的切矢，並且解決了端點曲率為零的問題;它使得設計者可以通過簡單地調整首末端點曲率參數便可以隨意地且很容易地控制曲線首末兩段曲線的形狀.最後還討論了曲率參數的取值對曲線端部形狀的影響
  16. With the phenomena of dropping flow, backflow and secondary flow effected by circulation and surface curvature, the centrifugal pump ' s inner flow is very complicated 3d flow. therefore, the centrifugal pump inner flow is one of the difficult problems both in testing research and numeric computation

    離心泵葉輪的內部流動是很復雜的三維紊流流動，同時由於受旋轉和葉片表面曲率的影響還拌有脫流、迴流及二次流的現象，是流體工程中較難的試驗研究和數值計算問題之一。
  17. Then, a step - by - step increase of vertical bending curvature is applied to the hull girder assuming that the plane cross section remains plane. at each incremental step, the stress of the cross section is evaluated using the average stress - strain curves of the elements as well as the incremental bending moment due to the curvature increment

    船體總縱極限彎矩的計算，由於要計及材料的和幾何的非線性因素而變得十分復雜，必須用增量的方法逐步計算，獲得完整的彎矩?曲率曲線后，才能得到總縱極限彎矩值。
  18. In general, the upward amplitude curve " curvature is larger, and it changes quicker. on the contrary, the downward is smaller and slower ; because the flare force contains the square of the wave elevation velocity, it results in an difference between the flare force frequence and the associated moving frequence ; the flare force decreases the downward amplitude of heaving oscillations ; the speed of ship has an ignorant effect on the peak values of three calculated values, but there is an obvious effect on the oscillating frequence ; the wave amplitude has an effect on the ship motion, and there is an linear relation between the oscillating amplitude and the wave amplitude on the whole. by the way, there are some experiences and lessons according to the progress calculation : before the calculation of the ship motion, we should checkout the balance in a calm water firstly, namely, the whole displace of ship and the longitudinal position of the center of gravity must be consistent with the draft in calm water, or else, the calculation may show the " floating " phenomenon ; the mixed language programming has a lot of virtues, but it exists a fatal limitation - the debug of dll

    研究表明：在某些頻率范圍內相關水動力系數基本不隨吃水變化，只有超過某一頻率后水動力系數的值才會出現差異；在橫搖方向，水動力系數並沒有隨著吃水的變化發生規則變化，而是出現了波動現象；近船首剖面的水動力系數計算表明，水動力系數的波動非常大，並遠遠偏離了平均位置的水動力系數值，值的變化速率也不盡相同，總的看來，上振幅曲線曲率較大，變化較快，下振幅曲線曲率較小，變化較慢；外飄力和波面運動的速度的平方項有關，導致其振動頻率和相應運動方向的頻率不同；外飄力使升沉向下運動的幅值減小；船速對三個計算量的峰值影響甚微，但對振動頻率有明顯影響；波幅對船舶運動的影響是明顯的，船舶運動的幅值基本上和波幅成線性關系。
  19. Nc machining requires " interpolation " algorithms that accurately and efficiently generate sequences of reference position, distributed according to a prescribed feedrate function, along the tool paths. this paper present a systematic derivation of the proper taylor series coefficients for variable feedrate interpolators. when the path is ph curves, detailed formulations for instances are presented where the feedrate v is specified as a constant, the function of the time t, the arc length s and the local curvature k

    對于nc加工要求插值演算法沿著刀具路徑準確、有效的生成參考點序列（根據預先指定的速率函數進行分佈）的實際工程需要，本文系統地推導了變速率插值運算元的泰勒系數，給出了當路徑為ph曲線，速率v為常數，及時間t 、弧長s 、曲率k的函數時具體的插值運算元。
  20. Tests relating to pavements. measurement of a rolling load deflection. part 2 : determination of deflection and curvature values using modified behkelman beam

    路面試驗.滾動加載撓度測量.第2部分:用改進的貝克曼量儀測定撓度和曲率值
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