井

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.

通过设置具有对称性的轨迹井(同时也把轨迹井推广到更加复杂的有界集上，如混沌吸引子)，生成具有循环群对称性的彩色图像。

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.

针对神东煤炭公司大柳塔煤矿活井21303综采工作面，上层采空区顶板突然大规模垮落对下层顶板及支架的突然冲击问题，文章采用动量定理、动量矩定理、达朗伯原理推出了顶板垮落瞬间的运动量及顶板切顶垮落所需要的剪力值计算公式，用ANSYS LS-DYNA程序对顶板垮落过程进行了数值计算，得到了最大冲击力，在大柳塔煤矿活井21303综采工作面对顶板垮落特征进行了实际观测和理论成果验证。

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

结合低渗透油藏渗流理论得到了低渗透油藏确定极限技术井距的公式，可为低渗透油田开发确定合理井网密度提供理论依据。

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资料的解释精度，根据新的解释成果，在沙埝地区北部部署的S40井和S42井均获得了高产工业油流。

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

应用数值模拟的方法研究了启动压力梯度对菱形井网压裂井日产油量、累积产油量、含水率、采出程度、地层压力等参数的影响。

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 唯一正义起点看见真正您并且有时当我们接触 honesty's 太多并且我必须闭上我的眼睛和掩藏我想要拿着您我死的'til 我们划分和哭泣的'Til 我想要拿着您恐惧在我消退的'til Romance 和所有它的战略留下我作战充满我的自豪感但，通过不可靠一些柔软生存 I'm 其它作家仍然设陷井在我的真相之内一名犹豫的职业拳击手仍然设陷井在我的青年时期之内时常， I'd 喜欢打破您并且驾驶您到您的膝盖时常， I'd 喜欢打破并且不尽地拿着您时常，我明白您并且我知道怎么坚硬you've 尝试了 I've 观看了当爱命令您并且I've 观看了爱通行证您时常，我认为we're 漂流物仍然寻找朋友兄弟或姐妹但另一方面激情再飘动

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.

题目：由《盲井》引发的对中国新生代导演纪录风格电影的探究随着中国第六代导演在国际影坛上屡获好评，从贾樟柯的《三峡好人》《小武》，到张扬的《盲井》《盲山》，他们独特的叙事风格和表现方式，打破了第五代光芒万丈的奢华神话，更加关心中国社会底层小人物的内心，重视人文关怀，自觉的纪实风格运用，新型的审美观，正日益引起人们的关注及反思。

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

开发井是生产已发现石油和天然气的井。

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.

在系统分析了大直径井段中普遍存在的钻井问题的基础上，指出当前深井大直径钻井技术的根本问题，是钻具、钻头、钻井装备与大直径井眼的工艺要求不相适应。

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 ...

本文以四口井的施工为例，着重介绍了煤层气井的特点，并指出了钻煤层气井的几个技术难点，通过钻头优选，钻具优选，钻井参数优选，绳索式取心技术等的现场实施和应用，基本解决了井身质量，清水钻井，清水绳索取心，煤层气保护等几个方面的技术难题，文中还介绍了使用中原油田自行设计的中原9508绳索取心工具的取心情况，尤其是在粉煤层地区的取心情况，这将为今后的煤层气开发打下坚实的基础。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。