ground boundary 中文意思是什麼
ground boundary
解釋
陸地邊界-
The example of most concern is the boundary layer next to the ground produced by the wind blowing over it.
最有意義的例子是風吹過地面時在地面附近產生的邊界層。 -
The west side of every wood and rising ground gleamed like a boundary of elysium, the sun on our backs seemed like a gentle herdsman driving us home at evening
每處林木的西邊和凸起的地面流光溢彩，宛如樂園的邊際，夕陽在背好似和藹的牧人晚間趕車送我們回家。 -
The high or low velocity anomalies ' s locations are consistent with the uplift and depression respectively, and their contacting boundary always correspond the faults exposed on the ground ' s surface. the basement interface that is the bottom interface of the sedimentary cover undulates strongly
上部地殼高速異常和低速異常分別與地表的隆起和坳陷高度一致，高速異常和低速異常的接觸帶往往與地表的斷裂位置有良好的對應關系，沉積蓋層底部的基底界面橫向上起伏變化較大。 -
A patch antenna with etched holes on the ground plane is also studied. the performance of the antenna at the resonant frequency is analyzed by using the fdtd method together with the pml boundary treatment. the results show that the surface waves are suppressed greatly, the bandwidth is improved and a 1 odb reduction on the sidelobe level is achieved at the 110 and 260 directions in the e plane
全面地研究了地面腐蝕周期圓孔結構的電磁晶體貼片天線在基波頻率處的性能，用fdtd方法並結合pml邊界處理技術對該天線所取得的研究結果顯示，本文設計的地面腐蝕型電磁晶體結構抑制了貼片天線中的表面波，增加了天線的帶寬，並有效地削弱了旁瓣，使天線的e面方向圖上110和260方向的兩個旁瓣被削弱了10db 。 -
The site boundary of the drill yardparade ground of the fireboat station and pier needs to be fenced off by a 3 m high fence wall or fencing with spikes on top ( please refer to item 23 of annex viii to schedule of accommodation and technical schedule for reprovisioning of tsim sha tsui fire station complex in the cd - rom contained in volume two of the ifp )
滅火輪消防局和碼頭的操場有需要用三米高而頂部帶有尖刺的圍墻或圍欄沿界線圍起來。這方面請參閱重置尖沙咀消防局綜合大樓的空間分配表和技術規格附件viii第23項（載于發展建議邀請書第二冊附連的光碟內） 。 -
From the vehicle safety angle, it provides theory and technical support for the research on automatic drive, intelligent drive and traffic safety. this paper is based on the study of single car external flow field about the simulation on the ground boundary layer, the rotating wheels and the crossing wind load, and on the two cars running - in - row and overtaking maneuvers
同時使用穩態超車的研究方法，利用了階背式、快背式和廂式mira模型代替轎車模型進行了不同車型超車過程的對比研究，利用定性和定量兩種方法研究了不同轎車車型在超車過程中的異同。 -
Hong kong north west express limited " hknwe " today held a ground breaking ceremony for the reconstruction and modification of the tuen mun ferry pier to facilitate the operation of a new cross - boundary ferry service in the first quarter of 2006
香港西北航運快線有限公司西北航運今天為屯門渡輪碼頭的改建工程舉行動工儀式。碼頭改建工程乃配合預計在二零零六年第一季開展的跨境渡輪服務。 -
Experiment of boundary layer suction in serpentine inlet under ground running
蛇形進氣道地面工作狀態附面層抽吸試驗研究 -
Fourthly, the solutions for non - axisymmetical dynamic responding of elastic circular plate ( thin and thick plate ) rested on transversely isotropic saturated half - space / layered ground subjected to arbitrary harmonic loading are presented. under the contact conditions, the problem leads to a pair of dual integral equations which describs the mixed boundary - value problem
首先建立直角坐標系下波動問題的狀態方程，經雙重fo吐er變換求解狀態方程后得到傳遞矩陣:利用遞矩陣給出直角坐標系下層狀橫觀各向同性飽和地基在任意分佈簡諧荷載作用下穩態動力響應的一般解。 -
Prince andrey, pale and haggard like every one else in the regiment, walked to and fro in the meadow next to the oat - field from one boundary - line to the other, with his hands clasped behind his back, and his eyes fixed on the ground
安德烈公爵也像團里所有的人一樣，面色蒼白而陰郁，他背著手，低著頭，在燕麥地旁的草地里一個田壟一個田壟地走來走去。 -
In april, both sides signed an agreement aimed at helping special representatives - - named by india and china in 2003 - - to negotiate territorial claims as experts delineated the boundary on a map and on the ground
四月，雙方為協助特使- - - 2003年中印雙方各自任命- - -工作簽訂一項協議，以令特使們能如專家們在地圖和地面上劃分的邊界那樣解決領土主權問題。 -
Realization of absorbing boundary condition with lossy media for ground penetrating radar simulation
地質雷達數值模擬中有損耗介質吸收邊界條件的實現 -
The results show that a warm high ridge at the middle level and transformed surface cold high over the plain provide a good background condition ; a cooling process produced by net surface radiation fluxes is the trigger and strengthening mechanism for the fog event ; the subsidence flow at the middle and low tropospheric levels is favorable for the setting - up and maintenance of stable stratification at the boundary layer and weak wind condition at the ground layer over the fog region ; the transportation of weak warm advection at lower levels and weak lift motion at the boundary layer play a very important role to the long maintenance of the fog event ; the intrusion of north wind accompanied by cold advection is a main dynamic factor of the fog dissipation
結果表明：在中高層暖性高壓脊及地面變性冷高壓穩定維持的大尺度背景條件下，地表凈輻射引起的近地層冷卻是大霧過程的觸發和加強機制；中低空下沉氣流的存在有助於近地層的弱風條件和穩定層結的建立；低層暖平流的輸入和邊界層的淺層抬升是大霧長時間持續的原因；伴隨冷空氣南下的偏北大風是驅使大霧消散的動力因子。 -
The conformal microstrip antenna with some unique character has been applied in many fields, especialy on speedy objects. in this paper, an efficient fdtd algorithm is introduced to analyse the microstrip antenna. firstly, the fdtd formula in descartes coordinate system and in cylindrical coordinate system are obtained from the time _ dependent maxwell equations using the yee algorithm in a calculating region where the dielectric parameters are independent of time and space. the choice of the space discretization units and the time discretization interval are discussed which are decided by the accuracy and stability respectively. the shape and setup of the excitation source are discussed too. the excitation source is chosen to be gaussian pulse in shape. secondly, the mur ' s first - order and second - order boundary condition are deduced in cylindrical coordinate system. the methods of transforming radiation fields from near zone to far zone in the frequency domain and in the time domain are presented when fdtd is applied to analyse the characteristics of far zone. finally, three kinds of microstrip antennas are analysed. they are a slot antenna that lies on a plane ground of a microstrip, a slot antenna that lies on a cylindrical ground of a microstrip and a microstrip line _ fed aperture coupled stacked rectangular patch antenna in cylindrical coordinate system
本文從麥克斯韋旋度方程出發，建立了笛卡兒坐標下無源空間中均勻無耗媒質的fdtd基本方程和圓柱坐標下無源空間中均勻無耗媒質的fdtd基本方程，詳細討論了fdtd法計算中時間步長和空間步長的選取原則以及激勵源的類型和設置；推導了mur一階和二階邊界條件在圓柱坐標下的差分格式；給出了在用fdtd法計算天線的遠場輻射特性時必需採用的頻域和時域近場遠場變換技術；最後用fdtd法計算了平面微帶縫隙天線、柱面共形微帶縫隙天線和柱面共形微帶層疊天線的輸入阻抗和遠區輻射場，並分析了天線的一些參數的變化對天線輸入阻抗的影響，得出了一些有用的結論。 -
Considering the interaction of overlapped shield tunneling, the boundary element method was applied to analyze the ground displacement distribution and interaction between two adjacent tunnels in three typical situations
摘要考慮盾構隧道疊交施工之間的相互影響，應用邊界單元法對相鄰隧道開挖過程中的三種典型疊交位置關系，引起的地層位移場分佈規律及相互影響進行分析。 -
Initial ground stresses of rock slope were simulated, using boundary displacement method ( bdm ) and stress function method ( sfm ) respectively, and combining with finite element method ( fem ). the practical results indicate both methods can simulate the initial stress field with good effect
採用邊界位移法和應力函數法，並結合有限元程序對巖質高邊坡進行了初始地應力場的模擬與分析，實踐結果表明這兩種方法均能取得較好的效果。 -
Based upon the forward simulation principle of ground penetrating radar, this article analyzes the realization method of the half grid spacing and the half time increment in difference format, at the same time analyzed the produce of the numerical frequency dispersion, then deduced the ideal frequency dispersion relationship and the super absorbing boundary condition
摘要本文從地質雷達正演原理著手，分析了差分格式中半空間步長與半時間步長的實現方法，同時通過分析數值頻散的產生，進而推導出了理想頻散關系和超吸收邊界條件。 -
Therefore, provides an important feeding ground for chinese white dolphin pak chau ( tree island ), a small island located closed to the western boundary of sha chau and lung kwu chau marine park, is an important night - time roost site for wintering cormorants ( phalacrocorax carbo ) in hong kong
重要的晚間棲息地點，這亦是沙洲、龍鼓洲和白洲於一九七九年九月二十日指定為具特殊科學價值地點的原因之一。 -
At the end of this paper, two methods are given out to solve this problem : ( 1 ) to decrease the width to height ratio of the calculation model, make it not greater than 1 ; ( 2 ) to restrict horizontal displacement of lateral boundary / boundaries and to directly assign ground stress in the field of calculation model
解決這一問題的方法有兩種： （ 1 ）使計算模型的寬高比盡量等於或小於1 ； （ 2 ）約束計算模型側面邊界的水平位移，在計算域內部給水平地應力直接賦值。 -
The whole dynamic finite - element analysis simplified based on 2d plane is performed to adapt engineering requires. the effect of both kinematic interaction and inertial interaction on pile - soil - structure systems within layered soil field is relatively comprehensively investigated. at the same time, the boundary effect of model, the horizontal dynamic features of piles and the nonlinear characteristic of slide and contact on the interfaces of pile - soil are considered too on the ground of no - element meshing technique applied for dimensional effect of piles in stratum - soils
建立了以適應工程需要的基於二維平面動力分析的簡化整體有限元模型；提出了能有效考慮樁尺寸效應的樁-土無單元劃分技術，在考慮了模型的邊界效應、樁基的水平動力特性和樁土界面的滑移、接觸非線性行為的基礎上，從時域內較為全面的研究了層狀土域中樁基上下部結構的慣性相互作用和運動相互作用兩種基本效應。
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