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The latest experimental results of the focusing perfermance of the compound high-energy X-ray lens is designed with PMMA with the parameters of 40 plano-concave elementary lenses positioned in line with axial symmetry, 200 μm radius of the concave surface, 0.15 nm working wavelength, 0.5 mm geometrical aperture and 8 mm length of the compound lens and 1.3 m focus length, are briefly introduced.

报道了这种新型X射线光学元件聚焦性能的最新实验结果。设计的高能X射线组合透镜为聚甲基丙烯酸甲酯材料,包括40个相同的、顺序排布的平凹折射单元,折射单元的球面半径为200 μm,组合透镜的几何口径约为500 μm,长度约为8 mm,焦距约为1.3 m。简要描述了PMMA材料X射线组合透镜的制作技术和制作过程。并给出了X射线组合透镜聚焦性能测试实验系统和实验条件。

Our experimental research was composed of three parts including five experiments, all of which were aimed to explore whether and how the visual properties, as a pre-imaging factors, affected the processing of image, such as maintaining, scanning and rotating of image.

前三个实验主要验证视角大小是否对表象的短时保持和心理扫描、心理旋转等加工过程存在影响;实验四运用回归分析进一步探讨视角大小如何影响心理扫描这种表象加工过程;实验五探讨视角大小对不同难度的心理旋转任务的影响方式是否相同。

Finally, the best values of the diameter of prefabricate hole and extrusion speed is determined through optimize simulation results,In the end, forming experiments study of cold extrusion is processed, experiments results shows that internal thread of C195 knuckle axis can be formed by cold extrusion method, and the extrusion torque is varied when diameter of prefabricate hole and extrusion speed is a series of different value.

最后对挂钩轴内螺纹的加工进行了一系列的实验研究,经过多次实验的失败反复,最终挤压加工出了符合要求的内螺纹;实验结果表明该零件内螺纹时可以采用冷挤压成形方法加工的,并且验证了成形过程中挤压扭矩是随着工件底孔直径和挤压速度的变化而变化的。

Through changing the preignition time and the excitation time of sparkle light source,electric arc light source and trace analyzing light source,the method shortening excitation period for analysis of mid of low alloy steel is studied.

研究了通过改变预燃时间,火花光源、电弧光源、痕量分析光源的激发时间来缩短激发周期进行中低合金钢分析的方法,通过实验将分析周期从34s缩短到23s,从精密度实验、稳定性实验、结果对照来看该方法是切实可行的,并取得了很好的经济效益。

This article that focuses on the systematic and in-depth research in the current primal problem about abnormal burst pressure reservoir depress burst pressure has procured following main fruits:1 It forms the method which could obtain massive vertical static state mechanics parameters.2 In a foundation of acquisition of rock mechanics parameters,apply bent lamella that as mechanical model along with characteristic of actual geologic characteristics to analysis curvature for anticlinal strcture, get homologous tectonic stress value throug relation between the curvature and stress and different principal curvature in anticlinal structure,consequently set up laminational stress model for anticline reservoir. The block lamination for existed fracturing date has formed method of setting up mechanical model of lamination terrestrial stress by abtaining the block tectonic stress coefficients which are got by complex utilization test, laboratory test and fracturing date playback.3 Analysesing the main reason which lead to high burst pressure by considering the characteristic of reservoir geology,reservoir,and rock mechanics and reservoir damage,etc.Establishing burst pressure quantitative prediction model which provide gist for depressing construction risk and optimizing construction craft under the condition of open hole completion ,gun-perforated completion and damaged reservoir.4 Provding theoretical basis for interpreting acidification pretreatment which could depress busrt pressure by finding the relation between the influencing factors and rock machanics parameters and analysing the factors that have effect on rock mechanics parameters. Expounding the mechanism of reaction of mixed monomineral and acid from the angle of microcosmic element, evaluating quantitatively acid sensilility of different kinds of mineral effectively, and determing the first-order reaction dynamical equation of each mineral.5 Revealing rock mechanics property chage as a result of acid flooding in different condition by sandstone traumata experiment in different temperatures which combined with rock mechanics triaxial stress experiment.6 Associating damage mechanics with sandstone acidizing, established sandstone damage mechanics model in the foundation of the recognition on the rock mechanics parametric variation which is caused by acid-rock reaction in both macroscopic view and microscopic view ,also demonstrated those processes and quantitative estimated the acid busrt pressure to direct the site operation.

本文针对目前异常破裂压力储层降低破裂压力的主要问题展开较为系统和深入的研究,取得了以下主要成果:1形成了利用测井资料,结合室内岩芯测试结果,获取静动岩石力学参数的相关性特征,从而获得纵向上大量静态力学参数的方法。2在获取了岩石力学参数的此基础上,利用弯曲薄板作为力学模型,结合区块实际地质特征对背斜构造进行曲率分析,通过曲率与应力的关系,利用背斜构造不同部位的主曲率求得相应的构造应力值,从而建立起背斜储层的分层应力模型;对已有压裂资料的区块分层,形成了综合利用测试、室内实验、压裂资料反演获得该区块构造应力系数,建立起分层地应力的力学模型的方法。3综合考虑储层地质、油藏、岩石力学特性和储层伤害等因素,分析造成高破裂压力的主要原因,综合利用岩石力学、弹性力学等知识,建立了裸眼完井、射孔完井条件下以及储层受到伤害后的储层破裂压力定量预测模型,为降低施工风险和优化施工工艺提供了依据。4完成了物性、岩性影响岩石力学参数的因素分析,找出了各影响因素和岩石力学参数之间的关系,为从机理上解释酸化预处理降低破裂压力提供了理论基础;从微观元素的角度阐述了单矿物与酸反应的机理;并在此基础上,有效评价了各种矿物的酸敏感性,定量确定了岩石中各矿物的一级反应动力学方程。5完成了不同温度下的酸液类型、酸液浓度、注酸量等一系列砂岩损伤实验,结合岩石力学三轴应力实验,系统揭示了在不同条件下注酸而引起的岩石力学性质变化。6将损伤力学与砂岩酸化相结合,在宏观、微观两个方面认识酸岩反应引起岩石力学参数变化基础上,建立了砂岩损伤力学模型,并对其进行验证,在此基础上定量计算酸化后的破裂压力,有效指导现场施工

So it is very important to undertake normal working of the coal spontaneous combustion experimentation system. The research content of this programer is to carry out fault diagnosis of the coal spontaneous combustion experimentation temperature control system and predict its working condition tendency.

而进行煤自然发火实验可以研究煤自燃原因、自燃升温过程规律性,因此煤自然发火实验系统的正常运行关系重大,本课题研究内容就是对煤自然发火实验台温度控制系统进行故障诊断,预测预报其运行状态趋势。

The color space based on the psychophysical experiments of human visual system is non-flat.

传统的色度学系统是建立在人类视觉系统的心理物理实验基础上的,共有基于实验的色标系统(如MUNSELL颜色体系)和基于实验的经验公式系统(如CIELAB,CIELUV体系)二类体系。

It can be seen form the results of the experiment that the method oftwo-wavelength pyrometry can be used to measure the rod-like cathode temperature.But this method has a big difficulty which is that it is difficult to separate the radiationflux due to cathode reflecting from the total radiation flux in the experiment.

实验中,我们测出了不同情况下的阴极温度分布;实验结果显示,双波长高温测量方法能很好地测量棒状阴极的温度,但是双波长高温测量方法存在着一个的很大困难是:在实验中,很难将阴极表面反射的辐射通量从总的辐射通量中分离出来。

This paper discusses on the necessity and importance of experiment course in the higher education teaching activities,probes into the problem of how to quantize the point rating standard in experiment course existing in experiment course teaching,and gives concrete point rating methods and diagramming methods.

论述了实验课在高等教育教学活动中的必要性和重要性,对实验课教学中存在的如何量化实验课评分标准问题进行了探讨,并给出了具体的评分方法和图解方法。

In order to discuss different teaching effect based on the fact, select palm-up attack→ palm-down quick push→ left push and right attack→palm-down slow chopping and down slow chopping→ palm-down quick push→palm-up attack→left push and right attack, compare to traditional teaching program.this research has been done in grade 2001、2002 students at ChengDu PE institute, According to analyse the research data and show, a program is better than B and C.

为了探讨不同程序的教学效果,根据现实条件,选出正手攻球→反手快推→左推右攻→反手慢搓和反手慢搓→反手快推→正手攻球→左推右攻与传统教学程序进行对照实验研究。实验在成都体育学院体育系2001级和2002级中进行,经对实验数据进行统计检验,结果显示:A教学程序优于B和C教学程序。

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推荐网络例句

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。