重力導數 的英文怎麼說

中文拼音 [zhònglìdǎoshǔ]
重力導數 英文
derivative of gravity
  • 重 : 重Ⅰ名詞（重量; 分量） weight Ⅱ動詞（重視） lay [place put] stress on; place value upon; attach im...
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 導 : 動詞1. （引導） lead; guide 2. （傳導） transmit; conduct 3. （開導） instruct; teach; give guidance to
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 重力 : [力學] gravity; force of gravity; gravity force; power of gravity; pull of gravity; gravitational...
  1. Because it is impossible to adjust the air bearing absolutely balance, the difference between mass center and rotation center must lead to a notable gravity disturbance torque. in the process of identification, modeling and identification of gravity disturbance torque is considered, and an extended kalman filter is educed for identifying air bearing inertia matrix and gravity disturbance torque, and then the algorithm is validated

    由於氣浮臺平衡調試方法和手段的限制，實驗過程中氣浮臺質心與轉動中心有一定的位置偏差，必將導致較大的重力干擾力矩，在辨識演算法的推導過程中，重點考慮了重力干擾力矩的建模和參數辨識問題，推導了氣浮臺的轉動慣量和重力干擾力矩辨識的擴展卡爾曼濾波演算法，並對演算法進行了數學模擬和全物理模擬驗證。
  2. 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。
  3. On the basis of investigations into the progressive yield process and the possible failure modes of rcc gravity dams, the quasi - elasticity design limit state of the ctrtical stability criterion is proposed and the real working state of the dams designed according to the ctriterion is discussed. a check formula using the material strength reducing factor as the safety index and a simplified formula similar to against sliding stability fromula are derived. finally, the corresponding design safety factors are given by using fem calculations with various influence parameters to be taken into account

    本文在研究碾壓混凝土重力壩漸進破壞過程和可能失穩方式的基礎上，提出了以準彈性臨界作為穩定臨界準則的設計極限狀態，分析了按該準則設計的大壩的實際工作狀態，導出了以準彈性強度儲備系數為設計安全指標的審查公式以及形式與抗剪斷公式相同的簡化公式，探討了定量計算考慮各種因素影響的相應設計安全系數的合理取值，並與現行規范方法進行了比較
  4. As to the current problems existing in the identification for these flutter derivatives, the dissertation tries to trace the development in the identification for the past unsteady aerodynamic forces of long - span bridges. it also investigates the method for flutter and buffeting analysis and the flutter derivatives. based on the present methods used in obtaining the unsteady aerodynamic forces and flutter derivatives, and co - funded by a natural scientific fund from the nation and a key project fund from the railway ministry, the current research has attempted to develop a device which can be employed in the wind tunnel to test flutter derivative through a forced vibration method

    鑒于目前橋梁斷面顫振導數識別的水平和存在的問題，本文通過對大跨度橋梁非定常氣動力、顫振分析方法及顫振導數識別方法的回顧和評述，基於現有的非定常氣動力和顫振導數的測試方法，在國家自然科學基金與鐵道部重點學科基金的聯合資助下，研究開發了一套在風洞中採用強迫振動法測試顫振導數的裝置。
  5. In the tidal estuary, the current is complex, and the flow is oscillatory. some experiential formulation has presented to calculate the vertical turbulent mixing coefficient. on the base of analysis of the hydrodynamic in the estuary, the theoretical equation, which describes the distribution of the space and time of vertical turbulent exchange coefficient, has developed, the equation has applied to the practice

    潮汐河口水流呈往復振蕩運動，本文在分析潮汐河口水動力特性基礎上，考慮了慣性力及重力等項的影響，通過理論推導得到潮汐河口垂向紊動交換系數的空間分佈及時間分佈的計算公式，以及垂向平均紊動交換系數的時間分佈的計算公式，並將其應用於潮汐河口的實際計算中。
  6. Roughly the same number could be derived by using thermodynamic or quantum - gravitational estimates of the total information content of the universe

    差不多的數字，也可以用熱力學或量子重力學對宇宙全部資訊含量的估計來導出。
  7. Then, harmonic analysis is done with the newest baytap - g tidal data analyzing software developed by ishiguro and professor tamura, who are working in japan and the eterna34 tidal data analyzing software developed by wenzel, who had worked in german. as a result, the recently observed tidal gravity parameters of jiufeng station are obtained. finally, the ocean loading correction of the observing tidal gravimetric parameters, the temporal synthesized tide, correction of the station air pressure and the polar motion on the gravity residual, the analysis of the final residual, and so on, are investigated

    Vauterin研製的tsoft潮汐數據預處理軟體，實施了觀測數據的預處理，為超導重力儀觀測數據的國際資料交換和數據分析準備了修正後數據；然後利用由日本ishiguro與tamura研製的最新的baytap - g和由德國的wenzel研製的eterna34潮汐分析軟體，對預處理后的重力潮汐觀測數據進行調和分析，獲得了九峰臺最近的觀測重力潮汐參數；最後討論了觀測潮汐參數的海潮改正、隨時間變化的重力合成潮的構制、大氣效應改正、極移重力改正以及最終重力殘差的分析。
  8. Detection of long - period core modes by using the data from global superconducting gravimeters

    利用全球超導重力儀數據檢測長周期核模
  9. The temporal, spatial and frequency - field characteristics are discussed. the validity of the corresponding empiric formula is analyzed and the atmospheric effects and correction method are investigated in the data analysis of the ground - based observations. the atmospheric effects on the gravity observations are analyzed and detected using the gravity data recorded with the superconducting gravimeters at the global geodynamic project ( ggp ) stations

    利用實測地面氣溫、氣壓資料獲得大氣負荷效應時間序列的數值結果，研究大氣影響的時間、空間和頻率特徵，分析經驗公式的有效性，研究地面觀測和數據分析大氣影響和改正的方案；利用ggp臺站超導重力觀測資料，分析檢驗大氣重力影響；分析igs臺站大氣位移改正的可能性
  10. During the processing system development, firstly, set forth the methods, importance and two recently formulas of hydrodynamic derivatives. secondly, based on the mmg module the maneuvering motion equations are established for the ship in still and deep water. to compile and run the program, the calculation results compared with the experimental data

    本論文首先簡述了獲得水動力導數的方法、重要性和兩種新的估演算法，接著運用mmg分離型船舶運動數學模型，建立了深水、靜水域的船舶操縱運動方程，並編制計算程序，將試驗結果同數值計算結果相比較，獲得較為滿意的結果。
  11. Based on the tidal gravity observation recorded with the gwr c032 superconducting gravimeter at jiufeng station, wuhan / china, the scale values of the gwr c032 scg and the lcr - et20 spring gravimeter are accurately determined with the method of instrumental same - site observing

    本文基於武漢九峰臺超導重力儀固體潮觀測數據，採用儀器同址觀測的方法，實現了gwrco32超導重力儀和lcret20彈簧型重力儀格值的精密標定；採用由比利時皇家天文臺p
  12. Recent activities for the airborne scalar gravimetry are summarized in this paper, they includes five aspects, viz. improvement of traditional airborne scalar gravity systems, development of new system concepts, optimization of acceleration deriving from dgps, optimization of filtering and estimation methods, and the application of airborne gravity data in various mapping and exploration applications

    本文概述了航空標量重力測量的研究現狀及發展動態，傳統航空重力測量系統的改進，新型系統方案的研究，從gps中導出加速度的理論和方法，濾波和估算方法及航空重力數據的應用等五個方面的重要研究成果。
  13. The quality factor is about 9543, which, compared with those determined based on the tidal gravity observations in the previous studies, more closes to those obtained by using the vlbi data. the complex resonance strength is ( - 6. 10x10 - 4, - 0. 01x10 - 4 )

    以武漢臺超導重力儀觀測資料為例，研究了海潮負荷對fcn共振參數擬合的影響和重力潮汐觀測中近周日共振的區域性特徵。
  14. This paper studies the corner layer behavior in quasi linear systems with turning points. under the appropriate conditions and by usin g the theory of differential inequality, the existence of the solution and its c omponentwise uniformly valid asymptotic estimation are obtained when the reduced solution does not have a continuous first - derivative in some point of ( 0, 1 )

    奇攝動轉向點問題是來自量子力學及其他物理力學中的重要問題，特別對非線性系統的轉向點問題，已有的結果甚少，文章研究一類具有轉向點的擬線性系統的角層現象，在適當的假設條件下，利用微分不等式方法證明了當其退化解在（ 0 ， 1 ）內某些點上一階導數不連續時解的存在性，並得到了解的按分量的一致有效的漸近估計。
  15. The model includes three aspects ( 1 ) objective : aspect. regional leading industry choice ( 2 ) criterion aspect : comparative advantage criterion, industrial relationship criterion, technology advancement criterion, market potential criterion ( 3 ) norm aspect : location quotient, comparative labor productivity, comparative fund profit and tax rate, area ’ s added value proportion, industrial influence coefficient, industrial sensitivity coefficient, technology advancement speed, technology progresses contribution rate, growth rate, demand income elasticity

    模型共分三層:目標層? ?區域主導產業選擇;準則層? ?比較優勢基準、產業關聯基準、技術進步基準、市場潛力基準;指標層? ?區位商、比較勞動生產率、比較資金利稅率、區內增加值比重、產業影響力系數、產業感應度系數、技術進步速度、技術進步貢獻率、增長率、需求收入彈性。
  16. The result showed that the survivor rate, seedling height, seedling weight and vigor index of the yellow - seeded were lower than that of the black - seeded, but with higher electric conductivity rate

    結果表明，甘藍型黃籽油菜的相對成苗率、相對苗高、相對苗重、活力指數低於黑籽油菜，單位電導率高於黑籽油菜。
  17. Derivative calculation and application in spherical cap harmonic analysis of local gravity field

    局部重力場球冠諧分析中的導數計算及應用
  18. The experimental results of two - phase flow and electric performance reveal the two - phase flow characteristics, the rule of bubble growing and breaking away and the effect of the gravity factor on cell performance. the work provided dependable scientific data and guidance for the application of the proton exchange membrane fuel cell in the aerospace realm. the main work and results of the study are presented as follows : 1

    實驗得到了微重力條件下直接甲醇燃料電池內部伴有電化學反應的氣液兩相流動圖像和相應電性能等實驗數據，揭示出了伴有化學反應的氣液兩相流特點、氣泡生長與脫離規律以及重力因素對燃料電池性能的影響規律，為質子交換膜燃料電池在航天領域的應用提供了可靠的科學數據和設計與運控指導。
  19. The analysis of the results from the numerical simulation shows fairly good effect and it concludes the method can be effectively used to solve the different problems of the similar fields

    本文的主要工作是為對空載發射導彈提供發射初始彈道數據，重點和難點在於機?彈氣動干擾力的數值計算。
  20. In order to integrally interpret the modern geodetic data, on the basis of available works, we put forward the basic concept of the coupling movement between the crustal deformation and density change, analyze the theory of coupling movement, and derive a general strict formula of time - varying gravity caused by the coupling movement

    摘要為整體解釋現代大地測量數據，提出了地殼變形與密度變化耦合運動的基本思想；分析了地殼變形與密度變化耦合運動的基本理論；導出了由地殼形變與密度變化耦合運動引起的重力時間變化一般嚴格公式。
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