Based on the balance of forces acting on interior earth fill of a counterfort structure, this paper proposes a theoretical calculation method of earth pressure on each member (including wall slab, counterfort and bottom slab) when the earth fill behind structure is in the condition of active critical equilibrium.

本文從扶壁結(jié)構(gòu)填土的力平衡條件出發(fā)国产一区鲁鲁在线视频免费播放，提出了當建筑物后背填土處于主動極限平衡狀態(tài)或彈性靜止狀態(tài)時作用在各構(gòu)件上土壓力的理論計算方法老牛影视无码av一区。

This makes more and more people pay more attention to studies and applications of numerical simulation in thermal recovery. In this research, we have developed a reliable mathematical model for thermal recovery, which takes a full consideration of the effect of viscos, gravitical and capillary forces on the three-phase flow of gas, water and oil, the effect of the temperature on the medium characteristics of liquid and solid, the phase equilibrium of gas-liquid in each component, heat transportation including connection, conduction and radiation as well as heat losses in both the overburn and underlying strata. In the space discreation of the mathematical model, we have proposed a new method based on the improvement of the conventional nine-points difference approximation, which has a higher difference accurancy.

本項研究以熱力采油的主要機理為基礎(chǔ)，充分考慮在粘性力一级黄色视频。、重力和毛管力作用下油水氣三相流動国产乱子精品的A片视频，考慮溫度對各種流體和固體介質(zhì)物性的影響，考慮每一組分中汽液兩相的相平衡经典自拍视频欧美日韩在线观看网站，考慮熱在地層中的傳導(dǎo)1024在线视频一区二区精99、對流和輻射以及上下蓋層的熱損失，利用熱力學(xué)第一定律国模精品一区、質(zhì)量守恒定律和流體遷移定律91POPNY老北熟女，建立了正確可靠的注蒸汽數(shù)學(xué)模型；在對數(shù)學(xué)模型進行空間離散時黄片欧美日韩一片二片三片，利用控制有限體積積分法九九色影院亚洲欧洲，對以往的九點差分近似作了合理的改進，使其具有較高的差分近似精度：結(jié)果表明国产一级性生活免费视频，該公式的近似精度要比以往文獻中所給的九點差分近似精度高黄色黄片，可以認為，在油藏數(shù)值模擬中啦啦啦www观看在线下载，如果遇到非均質(zhì)情況人人欧美乱码专区视频免费，使用這種九點差分近似更合理。

The US DoDs report to Congress in February said that despite changes in the political and diplomatic arenas in China and Taiwan over the last 20 years, the dynamic equilibrium of forces in the Taiwan Strait has not changed significantly.

美國國防部向國會報告超碰123，在日說理论片网址，盡管有變化，在政治和外交舞臺上的中國臺灣在過去20年中又大又粗又长又硬好爽国产，動態(tài)平衡的勢力在臺灣海峽沒有顯著變化性插图真人无遮挡。

equilibrium diagram：平衡圖

equilibrium condition 平衡條件 | equilibrium diagram 平衡圖 | equilibrium of forces 力平衡

equipotential line：等位線,等勢線 = 等勢線

equilibrium of forces 力平衡 = 力的平衡 | equipotential line 等位線,等勢線 = 等勢線 | equipotential surface 等位面,等勢面= 等勢面

equilibrium partial pressure：平衡分壓力

equilibrium of forces 力平衡 | equilibrium partial pressure 平衡分壓力 | equilibrium point 平衡點