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The evolution history of the volcanic rocks goes through five stages, the forming stage, the weathering and leaching stage, the burial and tectonic\|reforming stage, the erosion stage and the oil and gas accumulation stage. Finally, the model of porosity evolution was set up with andesite and basalt as examples.

在上述研究的基础上,将火山岩储集空间的演化过程分为火山岩的形成阶段、风化剥蚀淋滤阶段、埋藏和构造作用阶段、溶蚀改造作用阶段和油气聚集成藏阶段5个阶段,并以安山岩和玄武岩为例,建立了火山岩储层的孔隙演化模式。

The chaise longue features an extended curved base with the main frame of the piece being constructed out of two timber pieces form the sides and are CNC'd to a precision shape to give a perfect curve.

该躺椅的显著特点是延展的曲线形底座和由两块厚木片构成的上下两层,再结合现代化的数控机床技术构造成完美的曲线外形。

Effects of the components of chromating solution and influence of technological parameter on the chromate conversion coating are discussed.

研究了一种以钼酸盐为促进剂的铬酸盐转化处理工艺的配方和成膜机理,讨论了铬酸盐转化处理液中各组分的作用和工艺参数对铬酸盐转化膜层的影响,并对铝合金型材涂装前处理工艺流程和主要工序进行了说明。

By decomposing the problem system into an extended saturated soil system and a virtual pile system, through the strain compatibility condition between the extended saturated soil system and the virtual system at an arbitrary depth z along the pile, and combined the Laplace transform and its convolution, a Fredholm intergral equation of the second kind of the single pile in saturated layered transversely isotropic soils is established. The axial force and diaplacement of the pile are obtained by solving the Fredholm intergral equation.

将求解体系看作是饱和土体和虚拟桩的叠加,利用沿桩身任意一点z处饱和地基与虚拟桩的应变协调,并结合Laplace变换及其卷积性质,建立了饱和成层横观各向同性地基中竖向受荷单桩问题的第二类Fredhlom积分方程,对该积分方程进行求解可得桩的真实轴力、位移。

With the analysis of Quaternary geological environmental evolution, the riverbed overburden is classified as alluvium, river fluvial aggradation, glaciation aggradation, periglacial solifluctional aggradation, gravity aggradation, lacustrine aggradation and diluvium aggradation.

通过第四纪地质环境演化的分析,把覆盖层的成因类型划分为水成系列、冰川系列、冰缘系列、重力系列和共生系列五大类,其中又按搬运动力的不同特点分为冲积为主的类型、河流加积类型、冰川加积类型、冰缘冻融泥流加积类型、重力堆积加积类型、洪积加积类型、湖积加积类型等七种亚类。

The protective film decreased the surface roughness, and also increaser the friction coefficient in the process BTA absorbed on SiO2 polishing particle surfaces, which decreased the friction coefficient in the polishing process caused by the particles.

另外,BTA对成SiO2抛光磨粒具有一定的吸附作用,进而对抛光效果产生一定的影响,抛光磨粒表面吸附层的存在会减小抛光过程中的摩擦系数。

This paper is focusing on the setup of non-contact automatic measurement for the end face of fiber connector by applying micrography and image processing technology.

介绍了一个基于显微成像和数字图像处理技术的非接触式光纤连接器端面自动检测系统:待测的光纤连接器固定于显微平台上,CCD接收显微物镜放大的图像并输入计算机中,然后由系统软件自动对图像进行对比度增强,二值化,平滑去噪,图像分割等处理,从而分析计算出纤芯、包层的各项几何参数。

This paper systemically introduces the history and current status of the study on the problem of orthotropism and displacement back analysis, recounts and concludes the analysis theory about anisotropic rock mass, brings forward some models of displacement back analysis of the rock such as layered orthotropic model, proportional coefficient model, layered homogeneous model and equivalent simplificated model, and establishes target unknown, target functions and arithmetic for these models respectively, through analyzing the character of layered orthotropic rock mass.

本文系统介绍了正交各向异性问题和位移反分析方法研究的历史与现状,叙述与归纳了各向异性岩体的分析理论,通过分析成层正交各向异性岩体的特点,对该类岩体的反分析方法提出了分层正交各向异性模型、比例系数模型、分层均质模型和等效简化模型,并对各类模型分别确定了目标未知数、目标函数与算法。

Using your tamping rod, pack wet concrete into a layer about 2.5 thick in the bottom of your outer mold.

利用成层约2.5在你的外模底厚的捣固棒,包湿的混凝土。

Corrosion of carbon steel and the weathering steel in marine atmosphere during different time was compared,the morphology of rust layer was observed,and the distribution of the alloy elements in the rus t layer was determined.

张全成,吴建生,陈家光摘要:测量了碳钢和耐候钢在上海地区大气中的腐蚀速率,分析测定了锈层的相组成以及合金元素的分布。

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推荐网络例句

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。