earth dynamics 中文意思是什麼
earth dynamics
解釋
地球動力學-
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 -
The basic mechanics knowledge in bridge construction is involved to the basic knowledge in many branches such as theoretical mechanics, structural mechanics, material mechanics, flexible mechanics, structural dynamics, earth mechanics and hydraulics mechanics etc. to show the reason of research thinking of this paper, the intersectional theory among engineering mechanics, engineering construction and engineering supervision is studied, it mainly include following content 1 ) framework and structure the framework is the system or structural frame that can produce action
2 、橋梁建設中的力學基礎知識涉及力學中的理論力學、結構力學、材料力學、彈性力學、結構動力學、土力學和水力學等諸多分支中的基礎知識。論文中對橋梁力學中的幾個概念進行了詳細的闡述，主要包括以下內容： 1 ）機構與結構機構是指能夠產生運動的構架或體系。 -
Basalt have importance meanings on deduce the earth ' s mantle material composition, analysis tectonic environment and the geosphere deep dynamics research
摘要玄武巖在反演地幔物質成分、分析構造環境和巖石圈的深部動力學研究中具有重要意義。 -
The structure evolution and the earth dynamics mechanism of chagan sag and its adjacent area during miocene - cenozoic. divided four favorable places for prospecting based on the discussion of relation between the structure character and petroleum and gas of chagan sag
論文還討論了查干凹陷及其鄰區中?新生代的盆地構造演化及其地球動力學特徵，探討了查干凹陷構造特徵與油氣的關系，劃分了四個有利勘探區帶。 -
Based on actual data and structural activity view point, by using structural analysis, and simulation experiments, this paper analyzed structural geomeory, structural activity and earth dynamics of structural evolution of cenozoic of offshore area in liaohe, and assessed structural evolution and its control over hydrocarbon geological events and hydrocarbon distribution. the following achievements are obtained : there can be concluded three structural patterns in offshore liaohe. they are extending, sliding and reverse structural pattern
本文以大量的實際資料為依據，以構造活動論觀點為指導，運用構造分析、層序地層學理論和模擬試驗等新概念、新方法和新技術手段，較系統地分析了遼河灘海地區新生代構造幾何學、構造運動學和構造演化的地球動力學機制，分析構造演化對油氣地質事件及油氣分佈的控製作用。 -
The paper based on synthesize domestic and foreign ' s study achievement about basalt, systematical review basalt research history, present condition about basalt formation contributing factor and it ' s magma source area quality, uses the basalt to distinguish the earth ' s mantle type, the connection basaltic magma evolution and continent dynamics, and uses the basalt to distinguish tectonic environment
系統地綜述了玄武巖的成因和巖漿源區性質、利用玄武巖判別地幔類型、玄武質巖漿的演化與大陸動力學關系，以及判別構造環境等方面研究的現狀。 -
The main work done in the paper is as follows : 1. satellite attitude dynamics modeling study : for the earth - oriented three - axis stabilized satellite, a precise attitude dynamics model is established, considering the influence of the environmental disturbance, such as the gravity, the sun radiation, the earth magnetic field and the atmospheric resistance
本文的主要研究工作如下： （ 1 ）衛星姿態動力學建模研究：針對對地定向三軸穩定衛星，考慮了重力梯度、太陽輻射、大氣阻力、地球磁場等環境因素對衛星的影響，建立了較精確的衛星姿態動力學模型，同時又建立了四元素描述的姿態運動學方程。 -
The prediction of disastrous space weather is a hot topi c among solar - terrestrial physics and high technological fields. we propose that the future forecasting of the physical conditions that the violent solar disturb ance causes at the earth by propagating in solar wind depends heavily on the num erical method. this paper analyses the existing problems we are facing in the num erical prediction of disastrous disturbance events in solar - terrestrial space, an d then gives some suggestions for future study. for such a purpose, a six step sol ution method is developed to deal with one - dimensional symmetric interplanetary shock dynamics. it should be point out that that initialization of fully self - con sistent 3 - d mhd codes considering the solar - interplanetary - geomagnetic coupled r elations with initial - boundary values at 1r of the global output of solar pl asma and magnetic field using available solar observations is an essential requi rement in space weather operational codes for forecasting purposes
空間災害性天氣的預報是日地物理學界及高科技領域的熱門話題.未來預測太陽劇烈擾動所造成的行星際風暴到達地球空間的狀態勢必藉助于數值方法.淺析了空間災害性擾動事件數值預報存在的問題及未來設想，針對這一目的對一維球對稱問題提出了處理行星際激波的6步求解方法，指出未來空間災害性擾動事件預報模式應是一個基於三維的以真實太陽風為背景自洽建立起來的、以太陽等離子體輸出及磁場全球結構為初邊值、太陽、行星際、地磁因果耦合模式 -
It is typically difficult to experimentally replicate spacecraft dynamics in an earth - bound laboratory because of the influences of gravity and friction
由於地球引力和摩擦的影響，要想在地球上的實驗室實際復現航天器動力學無疑是非常困難的。 -
The objectives of this study were : i ) to understand the mechanism of applying polyacrylamide ( pam ) to control crust formation, to increase infiltration and reduce soil erosion ; and ii ) to quantify the dynamics of soil erosion processes with rare earth elements ( ree ) tracers
本文的目的是研究利用聚丙烯酰胺（ pam ）作為土壤改良劑來抑制土壤表面結皮，增加降水入滲，減少土壤表面徑流，降低土壤侵蝕；同時採用稀土元素（ ree ）示蹤土壤侵蝕的動態過程，研究土壤侵蝕的動力學機理。
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