遠地磁場 的英文怎麼說
中文拼音 [yuǎndecíchǎng]
遠地磁場
英文
distant geomagnetic field-
Abstract : based on 1 200000 aeromagnetic survey data performed in 1998, and referred to materials of geolo - gic and geochemical prospecting of the working area, this paper discusses the relationship between the characte - ristics of magnetic field, magmatic rocks, fault structure and the distribution of mineral resources, and investigates the geologic metallogenic environments, and sets up the prospecting criteria for hydrothermal and volcanic - sedimentary copper, lead, zinc, gold, iron, manganese deposits, then makes the prognosis of the prospecting potential of the working area
文摘:本文以1998年1 20萬航空磁測資料為基礎，參考地質和化探資料，對工作區磁場特徵、巖漿巖、斷裂構造與礦產分佈的關系進行探討，研究地質成礦環境，建立尋找熱液型和火山-沉積型的銅、鉛、鋅、金、鐵、錳礦找礦標志，對本區找礦遠景進行了預測。Abstract : based on 1 50 000 high - precision aeromagnetic data of 1996 and consulting other geophysical and geological data, this paper has analysed the framework of basement structure and fault structure and, in particular, probed into the relationships of aeromagnetic field characteristics, basement structure and fault structure to the distribution of underground thermal water. on such a basis, the paper also makes a preliminary analysis of the prospects of underground water in this area
文摘:以1996年1 5萬高精度航空磁測資料為基礎，參考其它地球物理及地質資料，對山東黃河口地區基底構造、斷裂構造格架進行了分析，尤其是探討了航磁場特徵、基底構造、斷裂構造與地下熱水分佈的關系，在此基礎上對本區的地熱水遠景進行了初步的分析。While carrying out the scheme, at first, the basic theory of antenna, array antenna and electromagnetic absorption, the performance parameter of antenna and parabolic antenna are deeply researched. in conformity, the characteristic and calculation of aperture field and near - to - far - field transformation for radiation pattern are detailed analyzed. second, the factors such as, the amount of the antenna elements, mutual coupling between each element, ground and the buildings on earth ' s surface, which affect the performance of array antennas ’ resultant field are stressed discussed
在系統實現過程中，課題首先從天線、陣列天線，以及電磁場計算方法的基本理論著手，分析了天線與拋物面天線的各項性能參數，以及天線的口面場和近-遠區輻射場的特點和計算;進而，更加深入的討論和研究影響天線陣列合成場強的各項因素，包括系統所使用的天線單元個數對陣列合成場的影響、天線單元之間由於互耦造成的影響、傳播過程中地面和/或地面建築物的影響等。Extreme ultraviolet radiation and x - ray created by magnetic field around the sunspots also cause the earth s atmosphere to heat up and expand. this will create additional drag to satellites or space shuttles orbiting at low altitudes and eventually pull them out of orbits earlier than expected
太陽黑子附近的磁場所產生的遠紫外輻射和x射線，使地球大氣溫度上升並且膨脹，這對在較低軌道運行的人造衛星或太空梭帶來阻力，令它們比預期提早偏離軌道。Zheng, h. n. and wang, s., 1992, magnetic reconnection in the earth ' s distant magnetotail ( ii ) effects of local driven force, chinese j. geophys., 35, 457
鄭惠南，王水， 1992 ，地球遠磁尾中的磁場重聯（ ii ）局地驅動力的影響，地球物理學報， 35 ， 667So it is necessary to reflect the inner reality physical field ' s numerical number analogy method to analysis and improve the magnetic field and the computing accuracy of the cable ' s eddy - current detection. Ｔ his affords helping for the researching of biased cable instrument in the future. first open domain electric magnetic problem ' s breaking method is done with, which supposing fictitious boundary far away from the region. second breaking the infinite region into the finite region and supposing the electric magnetic is too small to be ignored
通過採用目前處理開域電磁場問題的截斷法，人為地設定一個遠離待求區域的虛擬邊界，將無限區域截斷為有限區域，且認為在該邊界外面的電磁場已衰減得足夠小，小到可以忽略不計，從而令邊界上的電磁場場量為零，在此有限區域內採用較為成熟的Ａ ， Ａ法，並且併入庫侖規范建立數學模型。Beginning with the equivalence principal, two types of near - field to far - field ( nfff ) transformation s are discussed systematically, i. e. frequency - domain nfff ( fd - nfff ) and time - domain nfff ( td - nfff ). in td - nfff transformation, the concurrent - processing approach is used, where the contributions to far - field from the tangential electric current and magnetic current on the equivalence surface are calculated " on - the - fly " in step with the fdtd simulation. as a result, it is not necessary to store the tangential current components for every equivalence surface at every time step, and therefore reduce considerably computer storage required for the td - nfff transformation
在理論部分，本文從電磁場的等效原理出發，系統、詳盡地論述了頻域和時域近遠場變換的基本思想，在時域近遠場變換中採用實時的變換方法，即每進行一個時間步的迭代，就計算一次等效面上該時間步的切向電流和切向磁流對遠場各方向的貢獻，這樣就使時域近遠場變換不需要儲存等效面上每一個時間步的切向電流和切向磁流，大大減小由於近遠場變換而增加的計算機內存需要量。分享友人