By setting symmetric orbit traps (in particular, by using more complex bounded sets, such as chaotic attractors, as orbit traps), visually fascinating images with cyclic or dihedral symmetry can be created in this way.

通過設(shè)置具有對(duì)稱性的軌跡井(同時(shí)也把軌跡井推廣到更加復(fù)雜的有界集上在线天堂官网首页入口在线观看，如混沌吸引子)欧美ⅹⅹ性欧美，生成具有循環(huán)群對(duì)稱性的彩色圖像。

Aiming at bottom roof caving and support impact problems induced with abrupt large scale caving upper roof in face 21303 of Daliuta mine, this paper put forward the motion parameter at roof caving and calculation formula of roof shear breaking force with the help of theorem of momentum, theorem of moment of momentum and D' Alembert principle. Roof caving process was simulated by Ansys Ls-DYNA program, and maxim impact force was got. The theoretical research outcomes in the paper were applied in face 21303 of Daliuta mine, and were accordant with actual observing status of roof caving process.

針對(duì)神東煤炭公司大柳塔煤礦活井21303綜采工作面日韩裸体美女福利电影在线观看网站，上層采空區(qū)頂板突然大規(guī)腶级黄色大片在线观看视频？迓鋵?duì)下層頂板及支架的突然沖擊問題，文章采用動(dòng)量定理人人色人人爱爱、動(dòng)量矩定理超碰在线wwww、達(dá)朗伯原理推出了頂板垮落瞬間的運(yùn)動(dòng)量及頂板切頂垮落所需要的剪力值計(jì)算公式，用ANSYS LS-DYNA程序?qū)敯蹇迓溥^程進(jìn)行了數(shù)值計(jì)算国产免费网站看v片在线软件，得到了最大沖擊力公司三级片，在大柳塔煤礦活井21303綜采工作面對(duì)頂板垮落特征進(jìn)行了實(shí)際觀測(cè)和理論成果驗(yàn)證。

Combined with the percolation theory of low permeability oil reservoirs,we derived the function of det...

結(jié)合低滲透油藏滲流理論得到了低滲透油藏確定極限技術(shù)井距的公式久久99视频这里只有精品，可為低滲透油田開發(fā)確定合理井網(wǎng)密度提供理論依據(jù)日韩va精品。

Desired results have been achieved in oil and gas exploration.Key words: Shanian area; diabase; fault system; horizon calibration in multiwell; fault interpretation

以上方法的采用有效地提高了地震資料的解釋精度，根據(jù)新的解釋成果先锋资原吧，在沙埝地區(qū)北部部署的S40井和S42井均獲得了高產(chǎn)工業(yè)油流男人的午夜天堂国产一区。

Through numerical simulation methods, influence of starting pressure gradient on production indexes of fractured producers in diamond shaped well pattern was studied.

應(yīng)用數(shù)值模擬的方法研究了啟動(dòng)壓力梯度對(duì)菱形井網(wǎng)壓裂井日產(chǎn)油量、累積產(chǎn)油量‘欧美淫秽高清视频、含水率国产j精品系列、采出程度、地層壓力等參數(shù)的影響AAA在线观看免费视频国产片。

I'm only just beginning To see the real you And sometimes when we touch The honesty's too much And I have to close my eyes and hide I wanna hold you 'til I die 'Til we both break down and cry I wanna hold you 'til the fear in me subsides Romance and all its strategy Leaves me battling with my pride But, through the insecurity Some tenderness survives I'm just another writer Still trapped within my truths A hesitant prizefighter Still trapped within my youth At times, I'd like to break you And drive you to your knees At times, I'd like to break through And hold you endlessly At times, I understand you And I know how hard you've tried I've watched while love commands you And I've watched love pass you by At times, I think we're drifters Still searching for a friend A brother or a sister But then the passion flares again

I'm 唯一正義起點(diǎn)看見真正您并且有時(shí)當(dāng)我們接觸 honesty's 太多并且我必須閉上我的眼睛和掩藏我想要拿著您我死的'til 我們劃分和哭泣的'Til 我想要拿著您恐懼在我消退的'til Romance 和所有它的戰(zhàn)略留下我作戰(zhàn)充滿我的自豪感但91av视频免费在线观看，通過不可靠一些柔軟生存 I'm 其它作家仍然設(shè)陷井在我的真相之內(nèi)一名猶豫的職業(yè)拳擊手仍然設(shè)陷井在我的青年時(shí)期之內(nèi)時(shí)常， I'd 喜歡打破您并且駕駛您到您的膝蓋時(shí)常， I'd 喜歡打破并且不盡地拿著您時(shí)常亚洲俄罗斯1级，我明白您并且我知道怎么堅(jiān)硬you've 嘗試了 I've 觀看了當(dāng)愛命令您并且I've 觀看了愛通行證您時(shí)常欧美另类国产日韩，我認(rèn)為we're 漂流物仍然尋找朋友兄弟或姐妹但另一方面激情再飄動(dòng)

Wins the high praise repeatedly along with the Chinese sixth generation of director on the international film circle, from Jia Zhangke "the Three Gorges Good people""Young Wu", to makes widely known "Blind shaft""Blind Mountain", their unique narrative style and the performance way, have broken the fifth generation of forever glorious luxurious myth, even more cared that the Chinese society first floor unimportant person''s innermost feelings, take the humanities concern, the aware on-the-spot report style utilization, the new aesthetic standard, is arousing people''s interest and the resonsideration day by day.

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A development well is one drilled to produce a portion of previously discoverer oil and gas.

開發(fā)井是生產(chǎn)已發(fā)現(xiàn)石油和天然氣的井亚洲黄色在线观看网站。

It is pointed out that the essential drilling problem is the unsuitability of the drill pipe,drill collar,drill bit and drilling equipment for the needs of deep large diameter wellbore drilling.

在系統(tǒng)分析了大直徑井段中普遍存在的鉆井問題的基礎(chǔ)上国产操B在线，指出當(dāng)前深井大直徑鉆井技術(shù)的根本問題，是鉆具国产老色批在线观看视频、鉆頭91视频一级片、鉆井裝備與大直徑井眼的工藝要求不相適應(yīng)。

Based on the drilling operation of 4 Wells, this article describes the basic characteristic of coalbed methane and technical difficulties in drilling. Some technical keys as borehole quality, fresh Water drilling,fresh water coring, coal-bed methane protection are solved through application of a series of techno1ogical measures such as optimization of rock bit, optimization of drill stem, optimization of drilling parameters and string coring and etc. The experimental performance, especially in fine-grained ...

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