孔隙率较高,孔比表面积主要分布于孔径较小的微孔和过渡孔段,孔隙的连通性较差,煤层渗透率极低;
The distribution of pore surface area is mainly in micro and transitional pore; the pore connectivity is poor and the permeability of coal seam is extre…
建立了射孔段套管弹性抗挤性能分析控制一般方程,并采用摄动理论给出了的孔段套管弹性抗挤能力降低系数一般计算公式。
This paper gives the elastic differential equation of collapse of perforated casing, and a general formula for reduction factor of elastic collapsing by perturbation method.
高台段深孔孔内微差爆破技术在我国的首次应用,为中小型石灰石矿山高台段开采提供了切实可行的方法。
Millisecond delay technology of high step and deep hole is the first application in China, it offers a realistic method for high step exploitation of middle and small scale limestone mine.
面神经由茎乳孔出颅后,经腮腺、咬肌和颊区三段分布于面肌。
Facial nerve was divided into three segments (parotid gland, masseter and cheek) after leaving skull from stylomastoid foramen.
对于孔堤等地区的社区来说,经济上的不安,将在水患之后,还要持续一段时期。
For communities such as Klong Toey the economic anxieties will remain long after the floods recede.
剩下的四孔断桥,从此就成为了一段历史的见证。
It is now a severed bridge with only four arches. It has since become a witness of history.
全新电源系统,针对大面积及深孔加工,电脑可选定二段伺服进给速度,加工性能优异并可保持放电精密度。
Newly designed power supply system. While in machining big surface and deep hole, the computer provides two steps servo feed for superior machining quality and discharge accuracy.
进而介绍了由于设计、施工等几种常见的可能引起框架桥产生裂缝的原因,并以京九线某里程段的二孔框架桥出现裂缝情况为例分析了其出现裂缝的原因及裂缝的危害性。
The author took the crack case of one of two-hole frame bridges in the Jingjiu Railway Line as an example to analyze the reasons of its crack and the danger of crack to the sa.
透明幕上的画面:从孔中窥视到一段距离外部透明画面上的风景,通过变动透过画面的光线,可获得不同的画面效果。
A scene reproduced on cloth transparencies with various lights shining through the cloths to produce changes in effect, intended for viewing at a distance through an aperture.
早期沉降型埋藏区地层埋藏较深,孔店组和沙三段均具有生排烃能力,但早期排出的烃存在一个保存问题;
In the early subsiding region, both the Kongdian Formation (E k) and the Shahejie Formation fall into oil window, but preservation of the expulsed oil and gas is a problem.
组成江汉盆地潜江凹陷潜江组盐间段非砂岩储层的岩石主要为泥晶白云岩、钙芒硝岩、泥岩及其混积岩,孔渗性普遍较差。
Nonsandstone reservoirs between salt beds of Qianjiang Formation in the Qianjiang Sag of the Jianghan Basin are mainly composed of dolomicrite, glauberite rock, mudstone and their peperite.
施工为例,较为详细地介绍了铁路既有线改造工程并行段桥涵施工中采用挖孔桩防护的设计原理。
Give a more detailed description of the design principle that used protection with dug pile in transformation of existing railway bridge and culvert construction in parallel paragraph.
重复步骤(3)通过(6)包装的蓝松年底左右的黄色环,通过饲料和拉孔紧,完成第二阶段。
Repeat steps (3) through (6) to wrap the blue loose end around the yellow loop, feed through the hole and pull tight to complete the second stage.
采取何种高效、优质、安全的施工方法完成跨海段非通航孔桥墩承台施工是东海大桥工程建设能否取得成功的关键之一。
An efficient, excellent and safe way to complete the construction of pier footings at the non-navigable spans over the sea is one of the key points for the success of the East sea Bridge Project.
目的:探讨枢椎横突孔结构在转头引起寰枢段椎动脉狭窄或闭塞的临床解剖学意义。
Objective: To study the clinical significance of axis transverse foramen in the etiology of the vertebral artery insufficiency after cervical rotational movement.
川西须家河组2段气藏属于低渗低孔致密深层气藏,地层压力和破裂压力高。
Gas reservoir in Xujiahe Section 2 in west Sichuan are low porosity, low permeability, deep, high formation pore and fracture pressure, etc.
镜下鉴定和激光拉曼测试结果表明预先导孔(CCSD-PP2)第一段榴闪岩的主要矿物为角闪石、石榴石、黑云母和钠长石,是榴辉岩退变质作用的产物。
The main mineral assemblage of the garnet-amphibolite from the first part in CCSD-PP2 is amphibole, garnet, biotite and albite, which resulted from retrograde metamorphism.
《亚利桑那共和报》评论员比尔?古蒂孔茨评论这部电影为:“(《在海边》)就像时尚杂志推出的一段催眠视频。”
"It's like a fashion magazine put out a video to help you sleep, " Arizona Republic reviewer Bill Goodykoontz remarked.
研究区葡萄花油层段储层主要为中孔低渗储层,砂体连通性差,非均质性强。
Putaohua oil bearing reservoir primarily is middle prosperous and low permeable with sand bodies of bad conjunction and high heterogeneity.
关于锚索内锚固段注浆体与孔壁之间的峰值抗剪强度,目前很少有试验资料可供采用。
At present, very little test data is available about the peak shear strength between the grout and the bore wall in the interior bond section of prestressed anchorage cable.
硬格式是在软盘上冲出若干个孔,作为新段的起始标志。
In a hard-format, actual holes are punched on the disk, to mark the beginning of the new sector.
本合同段石方爆破采用深孔控制爆破和光面爆破相结合的施工方案。
The stonework blasting of this contract USES construction program that combine blasting deep hole and smooth blasting.
某钢厂转炉炉壳与托圈的联接方式初始设计为悬盘联接,该种联接装置使用一段时间后发现悬盘及悬盘孔的磨损较为严重。
After using this kind of connection equipment for some time, heavy wear was found at pan and the suspending pan hole.
三嵌段共聚物P123,F127被选择作为超分子模板用以设计和构筑微-介孔多级孔道金属-有机骨架。
Triblock copolymers P123 and F127 were also chosen as supramolecular template to design and construct hierarchically micro-and mesoporous metal-organic framework.
提出黄河宁蒙段的十大孔兑、库布齐沙漠及毗邻的砒砂岩地区是黄土高原水土流失最严重的地区。
Kongduis (small river formed by ice flowing), Kubuqi Desert and the adjacent zone are an area where the soil and water lose most seriously in Loess Plateau.
为了解决这个问题 ,作者分析了车削 (镗削 )加工台阶孔时 ,误差产生的原因 ;并设计了车削该台阶孔的专用机床 :工件的旋转作为主运动 ,两把车刀从两端进给运动 ,分别车削两段台阶孔。
To solve this problem, The author analyzes the reasons why the errors are generated in turning (boring) and designs the special machine, in which the rotation of part is main moveme.
东方扁虾雄性生殖系统由精巢、输精管及雄性生殖孔三部分组成,输精管可分为前、中、后三段。
The male reproductive system of Thenus orientalis is composed of paired testes, vas deferens and male gonopores.
第二和第三阶段分别是中孔和微孔扩散过程,颗粒内扩散为速率控制步骤。
The second and third fractions were mesopore and micropore diffusion respectively, and the intraparticle diffusion was the control step.
针对大港油田孔南地区孔一段冲积环境储层,开展了流动单元划分参数筛选和流动单元分类方法研究。
Parameter screening and classification method of flow unit were studied in alluvial environment in Kong 1 member in Kongnan area of Dagang oilfield.
针对大港油田孔南地区孔一段冲积环境储层,开展了流动单元划分参数筛选和流动单元分类方法研究。
Parameter screening and classification method of flow unit were studied in alluvial environment in Kong 1 member in Kongnan area of Dagang oilfield.
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