行星利用學 的英文怎麼說

中文拼音 [hángxīnglìyòngxué]
行星利用學 英文
planet utilization
  • 行 : 行Ⅰ名詞1 （行列） line; row 2 （排行） seniority among brothers and sisters:你行幾? 我行三。where...
  • 星 : 名詞1 （夜晚天空中閃爍發光的天體） star 2 [天文學] （宇宙間能發射光或反射光的天體） heavenly body...
  • 用 : Ⅰ動詞1 （使用） use; employ; apply 2 （多用於否定: 需要） need 3 （敬辭: 吃; 喝） eat; drink Ⅱ名...
  • 學 : Ⅰ動詞1 （學習） study; learn 2 （模仿） imitate; mimic Ⅱ名詞1 （學問） learning; knowledge 2 （學...
  • 行星 : [天文學] planet
  1. Many planets ( for example, ganymede, mercury, the earth, jupiter and saturn ) and stars ( for example, the sun ) possess intrinsic magnetic fields. the explanation for their existence and variation remains a great challenge to planetary scientists and astrophysicists. this article attempts to review some recent developments and difficulties in the study of magnetohydrodynamics for the electrically conducting fluid interiors of planets and stars. it is the fluid motions, usually driven by thermal convection, that generate and sustain magnetic fields through magnetohydrodynamic processes in planets and stars. in planets, the magnetohydrodynamic processes are strongly affected by the combined and inseparable effects of rotation, magnetic fields and spherical geometry. the key dynamics involves the interaction between the coriolis and lorentz forces. in the sun, it is the solar tachocline, a thin shear flow layer located at the base of the convection envelope, that plays an essential role in the solar magnetohydrodynamic processes which produce the 11 - year sunspot cycle. some results of a new nonlinear three - dimensional solar dynamo model are also presented

    許多行星（如木衛三，水星，地球，木星和土星）和恆星（如太陽）具有內部磁場.對這些磁場的存在和變化的解釋對行星科學家和天體物理學家是一個巨大的挑戰.本文試圖總結行星和恆星的導電流體內部磁流體力學研究的新近發展和困難.一般由熱對流驅動的流動通過磁流體力學過程產生並維持在行星和恆星中的磁場.在行星中磁流體力學過程強烈地受到轉動，磁場和球幾何位型的綜合影響.其動力學的關鍵方面涉及科里奧利力和洛倫茲力間的相互作用.在太陽中其流線，即處于對流層的薄的剪切流層在太陽的磁流體力學過程中扮演了一個基本的角色，並由之產生了11年的太陽黑子周期.本文也給出了一個新的非線性三維太陽發電機模型
  2. This article uses advanced cad / cae software - - - ug, adams and ansys to build the integrated system platform based on theory of dynamics of multibody system for the purpose of resolving the engineering problems of general retarder design, and analyses the performance of xw - 8175 - 11 planet - cycloid retarder

    本論文針對行星齒輪減速機構設計中存在的問題並根據實際工程需要，在多體動力學理論基礎上，利用cad cae軟體ug 、 adams以及ansys構建了集成的系統平臺，並在此基礎上，對xw - 8175 -型擺線針輪減速機構進行了性能模擬。
  3. Its main contributions include the following several aspects : firstly, the dissertation constructs the mathematic model of short baseline orientation determination using two geostationary satellites and analyses the applicable conditions of carrier phase interferometry. orientation determination precision is analysed in depth through both the conventional linearized method and monte - carlo computer simulation method, and the mathematical simulation results show that the linearized method has the shortcoming of fairly low elevation error analysis precision in high latitude area so as not to be very appropriate there. by analyzing the definite factors influencing orientation precision, the dissertation develops the concept of orientation dilution of precision, which uncovers the internal cause of exotic error behavior of bi - satellite orientation, and has important guiding significance for practical engineering applications

    本文系統地研究了基於「北斗一號」衛星載波相位干涉測量原理實現地球靜止雙星定向的相關技術，主要研究成果包括以下幾方面:首先，建立了利用兩顆地球靜止軌道衛星進行短基線定向的數學模型，分析了載波相位干涉測量的適用條件;採用傳統的線性化解析法及蒙特卡洛隨機模擬法兩種途徑對雙星定向的精度進行了詳細分析，數學模擬結果表明在高緯度地區線性化解析法由於俯仰角誤差分析精度略有下降而不太適合;在分析定向精度確定性影響因素的基礎上，提出了雙星定向精度衰減因子odop的概念，揭示了雙星定向誤差特殊表現的內部機理，對實際工程應用具有重要的指導意義。
  4. It has some important potential applications in geodesy and geodynamics, including the definition, practical realization, and the interconnection of different reference frames, determining the geocentric positions of vlbi stations, estimation of the gravity field of the earth, and satellite orbit determination using the delay and delay rate observables

    它在大地測量和地球動力學方面很有應用潛力，如不同參考框架的定義、實現和相互連接，利用延遲和延遲速率來進行vlbi測站地心坐標的測定，地球重力場的估計和衛星定軌等。
  5. The modal neural files ( mnf ) derived from i - deas modal solution were imported into the adams / flex. then the flexible multi body dynamics simulations of the deployable truss system were carried on when the truss is assembled with a spacecraft. the dynamics characteristics of the truss in the moment of folded state and completely deployed state were listed

    利用i - deas對桁架單元的模態進行計算，生成模態中性文件，然後將其輸入到adams / flex里與衛星組成柔性空間展開桁架結構模型，進行展開桁架的多柔體動力學模擬計算。
  6. A simulation system of high precision orbit propagation is constructed in the integrated environment of matrixx, and some problems on the applications of matrixx in aerodynamics are discussed

    本文利用matrixx對衛星精密軌道預報進行了模擬實現，並討論了matrixx在航天動力學的應用問題。
  7. Finally, the improved method is utilized to identify data acquired by vibration test of a honeycomb sandwich structure with different magnitudes, locations or vibration directions, and the identification results are used to analyze the characteristic of the structure in order to guide the further study of satellite structure ’ s design

    最後利用改進后的dbm方法對幾組在不同量級、不同振動方向、不同測點的蜂窩板夾層結構的振動數據進行辨識，並利用辨識的結果對于結構的動力學特性進行分析，從而為實現對衛星結構的設計提供依據。
  8. Though the hill equation was improved it cannot satisfied with the long distance navigation. here is considering the main satellite the following satellite and the target satellite format a triangle in the space which was useful in the relative navigation. the orbit of the following satellite was resolved by calculate the hill equation

    盡管如此改進的hill方程依然不能滿足遠距離的相對導航，當從星在攔截目標星時，若目標星在攔截過程中發生軌道機動遠離主星，這里考慮到在已知從星軌道的前提下利用主從星以及目標星在空間形成的三角關系這一有利條件進行幾何法定位的研究，並通過數學模擬對其誤差大小進行了分析。
  9. The research and developing of gps / gsm vehicles watch and control system based on analyzing gps positioning technology is discussed in this article. this system is a public security prevention and far distance watching control telecommunication management which has adopt the advanced system in the world including gps / gsm, gis and internet. through this system, all the movable objectives covered by gsm net can be kept being watched and controlled from far distance. the gps data of the movable objectives and different kinds of alarm data will be sent back to the service center through gsm or cable. then the center may send the information of movable objectives " gps data and help alarms that have been already classified and identified to the different departments to deal with linking the consumers through ddn, isdn, pstnand adsl. the advantages of this system is that it adopts mature gps technology and combines the movable telecommunication net - gsm provided by china telecommunicate trades throughout the nation and it can get voice information everywhere. by utilizing internet, vbandsql server computer technology, watch and control center and far distance terminals can aim at how to increase vehicles operating efficiency, decrease wear, promote service quality and build a concentrated system of watch and control, deploy and cammand, scientific management, coordinate and process, and safety in the professions relevant with transfortation of the city

    移動目標的gps數據及各類報警數據通過gsm網路及電信有線網路傳回監控服務中心。該中心可通過ddn 、 isdn 、 pstn或adsl等方式與用戶相聯，將移動目標的gps定位信息，求救信息，報警等信息進行分類確認后，實時傳送到相應的職能部門進行處理。本系統的優點在於利用了成熟的gps全球衛星定位技術，並結合了我國電信行業在全國所開通的gsm移動通訊網路，在話音上實現了全國漫遊等特點，在監控中心和遠程用戶終端利用網際網路技術、 vb數據庫管理系統、 sqlserver分散式數據庫管理系統等計算機技術，可針對城市中與交通有關的各行各業如何提高車輛使用效率，降低損耗，提高服務質量，建立集監控、調度指揮、科學管理、協調運營、安全防範為一體的指揮控制體系，發揮其不可替代的作用。
  10. Based on chinese tracking and data relay satellite ( ctdrs ) in the future, the antenna pointing control and complex control theory of user satellite are studied deeply in this dissertation, which is funded by the improve item of dept. of astronautic engineering and mechanics ? “ the teaching demonstration of antenna pointing control system in tdrss ”. the main contents of this dissertation are consisted of the following parts : firstly, dynamics equation is derived using lagrange equation for user satellite, so as the kinetics equations of user satellite at the same time are expressed in the form with matrix differential equations that is suitable for attitude control system design and analysis

    本學位論文結合航空宇航科學與技術學科研究生教學基地實驗室建設項目「中繼系統星間鏈路天線指向控制系統教學與演示實驗」 ，以我國跟蹤與數據中繼衛星系統為背景，對某型號用戶星星間鏈路天線指向跟蹤控制和復合控制理論進行深入的研究，研究內容主要包括以下幾個方面: 1 .利用lagrange方程建立了用戶星的動力學方程，同時推導了運動學方程，並將這組動力學方程以矩陣微分方程形式表示，使之適用於姿態控制系統的設計和分析。
  11. Eric rignot of nasa ' s jet propulsion laboratory at the california institute of technology and pannir kanagaratnam of the university of kansas used satellite data to track the movement of greenland ' s glaciers, which slide slowly down to the sea and deposit ice

    美國宇航局噴氣推進實驗室的埃里克利格諾特和美國堪薩斯大學的潘尼爾卡那格拉特納利用衛星數據對格陵蘭島冰山的運動進行了監控研究。
  12. Employing the satellite images of landsat - mss and landsat - tm and the integrated techniques of rs, gis, and gps, the authors, with maotiaohe river basin as a case, studied the process and driving factors of land use / cover changes since the beginning of 1970s, and modeled the possible land use / cover changes scenarios in the coming 10 years based on clue - s model, and then made an ecological evaluation on effect of the changes over the past 30 yeas as well as in the coming 10 years by using theory and method of landscape ecology. in this research, the authors, from the angle of international lucc studies, threw much light on the land use / cover changes in the basin and also the derived ecological and environmental problems such as karst rocky desertification

    本文以位於貴州中部的貓跳河喀斯特流域為對象，以1973年的mss和1990年、 2002年的tm等衛星影像為數據源，運用rs - gis - gps集成技術，研究了該地區在過去三十年間土地利用/覆被變化的過程、驅動機制，運用clue - s模型模擬、預測了該流域在不同目標情景模式下的土地利用/覆被變化，並運用景觀生態學的方法對貓跳河流域過去三十年間的土地利用/覆被變化以及未來不同情景模式下的土地利用/覆被變化的生態效應進行了評價。
  13. Prepared technical parameters were optimized by l9 ( 34 ) experiment analysis. a unique method for cleaning and drying of substrate - cleaning used by scour, drying used by infrared light was fished out by large numbers of experiment. chemical mechnism of zno thin film prepared by sol - gel technique was discussed by dta for the first time. by the measurements of sem, xrd and uvs, the thin film was analysed. the result proved that the thin film with strongly preferred orientation of c - axis perpendicular to the substrate surface which surface was homogenous, dense and crackfree was the crystalline phase of hexagonal wurtzite. the thin film was composed of plentiful asteroidal crystal which crystal dimension approximately 10 30nm. the average transmittance of thin film in visible region was above 90 %. the results of measurements else also proved that the thickness of single dip - coating was 75 240nm, this films resistivity was found to be 3. 105 102 3. 96 105 ? cm. the thickness and resistivity of thin film influenced by dope - content, withdrawal speed, pre - heat - treatment, anealing were reseached respectively

    利用xrd 、 sem以及uvs光譜儀等分析方法對薄膜進行了研究，結果顯示，所制備的薄膜為六方纖鋅礦型結構，具有高c軸擇優取向性；表面均勻、緻密，薄膜材料由許多星狀晶粒組成，晶粒尺寸大約為10 - 30nm左右；薄膜可見光透過率平均可達90 % ；對薄膜厚度以及電學性能進行了測定后發現：單次鍍膜厚度約為75 - 240nm ， al ~ （ 3 + ）離子摻雜型氧化鋅薄膜的電阻率在3 . 015 102 - 3 . 96 103 ? cm范圍內；分別研究了摻雜濃度、提拉速度、預燒溫度、退火溫度等工藝參數對薄膜厚度和電阻率的影響。
  14. The space optical remote sensor are subject to complicated space thermal loads, the calculation of the thermal response are performed in this paper by the method of fem and some thermal control method are taken, so the temperature ' s distribution of the sensor are well improved

    摘要空間光學遙感器的工作平臺為空間微小衛星，它在軌運行期間受到各種空間熱環境激擾的作用，本文利用有限元法對空間光學遙感器進行了空間熱環境下溫度響應的分析求解，並進一步採取熱控措施使儀器的溫度梯度滿足要求。
  15. In this dissertation, a analytic solution of neutron source of s - process in agb star has been given. with the up to date experimental data of 13c (, n ) 16o and 12c ( n, y ) 13c reaction rate, we carry out a analytic research for neutron source of s - process

    中國原子能科學研究院博士學位論文本文給出了agb星s - -過程中子源的一個解析解，並利用』 3c （ a ， n ） 『 60反應最新實驗數據和我們研究得到的』 zc （ n ，力』 3c反應的截面和核反應率，對s - -過程的中子源進行了解析研究。
  16. Through the analysis of attitude dynamic equation, how to realize three axis passivity stabilization of the mircrosatellite by just using environmental torque is presented. three sorts conformations of three axis passivity stabilization of the mircrosatellite by using environmental torque are put forward, one is to realize the passive attitude control of microsatellite by using the aerodynamic moment and the gravity gradient, the other two by making use of the gravity gradient and the geomagnetic moment, the attitude dynamics of microsatellite of the three sorts are analysed in detail

    通過對衛星姿態動力學方程分析，給出如何利用環境力矩實現微小衛星三軸姿態被動穩定，並提出三種利用環境力矩實現微小衛星三軸姿態被動穩定方案，即一種利用氣動力矩和重力梯度實現微小衛星三軸姿態被動穩定方案和兩種利用重力梯度和地磁力矩實現微小衛星三軸姿態被動穩定方案，對採用這三種方案的衛星的姿態運動進行詳細分國防科技大學研究生院學位論文析。
  17. Explain that man has entered the space age since the mid 20th century. not only were more planets, asteroids and satellites discovered, but also scientists were able to obtain the information of their surface structures by various means

    說明在二十世紀中期以後，人類進入太空時代，除了發現更多行星小行星和星外，科學家並利用種種不同方法，取得這些星體表面結構的資料。
  18. Two temporal satellite images were used for vegetation mapping of wolong nature reserve. through overlay analysis of the vegetation maps and dem data, the authors studied the distribution pattern variation of different vegetation types along the topographic gradients. the study resulted that : the extensive deforestation activity beginning at medium 1960 s made intensively impact on the vegetation distribution pattern, and the aftereffect can be distinguished clearly even in medium 1980 s

    北京大學城市與環境學系，北京， 100871摘要：利用臥自然保護區1987年和1997年兩個時段的衛星遙感影像進行植被制圖，並與dem模型數據進行疊圖分析，研究不同植被類型在各種地形梯度上的分佈格局及變化特點。
  19. Network education teaching on internet divides into synchronous and asynchronous teaching two classes. the synchronous teaching transfers the multimedia classroom ’ s scene and teacher ’ s media in teaching with ddn / adsl / atm and sky satellite to distance classroom at real - time by internet audio and video technology so that the teacher questions their students and their students ask the question as well or the students consult their teacher, which realizes the similar teaching at a classroom. the courseware on demand ( cod ) is a important study method in asynchronous teaching, that the courseware was stored in the computer server, the student demand the courseware according to their plan to self - study, accompanying that the teachers answer the students ’ question on internet, bbs at the same time, which complete the asynchronous teaching

    利用internet實現網路教學可以分為同步式和異步式兩種:同步式教學主要應用internet的網路音視頻技術，通過地網（ ddn / adsl / atm ）或天網（衛星）將多媒體教室中教師授課內容和授課情景實時轉播到遠端多媒體聽課教室，學生可在遠端即時回答老師的提問或向老師提問，實現了與真實課堂類似的實時互動式教學;異步教學的重要學習方式是課件點播（ coursewareondemand ） ，即將多媒體課件放在服務器上，學生依據個人學習進度通過網路點播所需課件進行自主學習，同時與教師在網上輔導答疑、網上討論等環節相結合，完成網路教學的異步教學過程。
  20. " we do believe that within to 10 to 15 years we will find the first planet that is small and earth - like, " scientists lisa kaltenegger and wes traub have analyzed atmospheric gases keyed to life over earth ' s history, creating something of a fingerprint for life

    「我們相信在10到15年之內，我們將會發現第一顆小型的類地行星， 」科學家利薩和韋斯分析了大氣物質在地球史上產生生命的關鍵作用? ?創造出具有生命特徵的物質。
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