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Second, transient flow for vertical well and fractural well in porous media with arealanisotropy has been researched in this paper. The analytic solution for vertical well andsemi-analytic solution for vertical fractural well is developed by using image inversion,superposition principle, Laplace transformation, Fourier transformation, as well as theirinverse transforms, and storage and skin are taken into account. For vertical fractural well,influence of pressure and productivity is studied when the orientation of artificial fractureisn't in accordance with the direction of major permeability, it is fundamental to evaluatepotential and analyze well test data.

文中研究了平面各向异性储层不定常渗流问题,建立了平面各向异性储层交叉直线边界中一口直井渗流的数学模型,利用镜像反演、Laplace变换、Fouier变换及其反变换推导了不同边界条件下直井的Laplace空间解析解,考虑井储和表皮的影响,分析了曲线特征及影响因素的敏感性曲线;并运用影响椭圆及Duhamel叠加原理,推导了平面各向异性储层中垂直裂缝井的压力分布方程,考虑了水力裂缝与主渗透率轴成一定角度对压力及产能的影响,为垂直裂缝井的产能评价及试井分析提供依据。

The method how to separate the radial jumpiness of the large shaft by three-point method to gain the round error in high precision is showed particularly. In the part of diameter measurement, this paper indicates how to standardize the photomicrosensor and shows the way how to use correction signal correct the measure error of the grating system which is used to measure the rotated angle of the wheel in detail.

文中详细论述了在圆度误差测量中,利用三点法分离大轴支承径向跳动引起的测量误差而获得高精度的圆度误差测量值的方法以及直径测量系统中,光电开关测量精度的标定方法和通过构建误差修正函数对实现滚轮转角测量的圆光栅系统的测量误差进行实时修正的方法。

The table of contents include 15 parts, early events in neural development; neuronal differentiation; pattern and positional information; movement and migration of neurons; axon outgrowth and the generation of stereotyped nerve patterns; neuronal death during development; trophic effects of targets on neurons; long-term effects of neurons on their targets; formation of synapses; selective synaptic connections; the molecular basis of neuronal recognition; rearrangement of developing neuronal connections; maintenance and modifiability of synapses; the development of behavior; principles of neural development.

内容包括15部分,早期神经发育事件;神经细胞分化;模式与位置信息;神经元运动及迁移;轴突生长与固定的神经模式的形成;发育过程中的神经细胞死亡;对神经细胞靶向的营养效应;神经细胞对它们靶向的长期效应;突触形成;选择突触连结;神经细胞识别的分子基础;发育过程中神经细胞连结的重置;突触保持和改变;行为发育;神经发育原理。

The plastic deformation induced due to cyclic rotation of principal stress axes alone can be in the same magnitude as that due to shear with fixed principal stress axes. 2 The volumetric strain due to shearing of cyclic rotation of principal stress axes is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. The former is characterized by its reversibility and is independent of past shear history, the latter by its irreversibility increases with the increase of cycle number yet its increase rate decreases with its accumulation. 3 The obvious non-coaxiality between directions of the principal stresses and principal strain increments is found and its degree depends largely on the change of shear stress component. 4 The intermediate principal stress has considerable effects on the deformation behavior of sands in the condition of cyclic rotation of principal stress axes. The accumulation rate of the irreversible dilatancy component increases with the increase of the intermediate principal stress parameter.

具有初始各向异性的砂土在纯应力主轴循环旋转排水条件下的主要变形规律为:①纯应力主轴循环旋转可产生与应力主轴固定单调剪切处于同一数量级的塑性变形;②纯应力主轴循环旋转引起的剪切体变包含可逆性剪切体变分量和不可逆性剪切体变分量两部分,其中可逆性剪切体变分量在一周内可完全恢复,基本与应力历史无关;不可逆性剪切体变分量随循环周数的增加呈单调增加,且增加速率随其自身累积值的增大呈减小趋势;③应变增量主轴与应力主轴之间的非共轴现象显著,且在一周内具有分段性;④中主应力对应力主轴循环旋转条件下砂土的变形特性有重要影响,不可逆性剪切体变分量的累积速率随中主应力系数的增加而增加。

The results showed that there existed variation among eucalypt families in wood physical-mechanical properties and wood chemistry. There were significant differences among E.pellita families、E.grandis families and E.urophylla譋.grandis clones in wood colors as well as between Strains and within trees.The variation of the surface wetability of wood between E.grandis families and E.urophylla譋.grandis clones were significant.Even in the same families level or clones level,there still existed the same regulation. The degree of collapse of eucalypt had a large relation in the amount of tylosis in vessel and vestured pits on the cell wall of vessel. The more rich tylosis and vestured pits in vessels,the more probability to occur collapse for eucalypt.The biggest moment collapse was probably the critical point of the drying degrade.During the fomulation of drying technology,it is necessary to adopt moderate condition to make the vessels which had formed the biggest moment collapse at the biggest moment collapse resume,especially to prevent the permanent set.At the normal temperature level,the main factors which influenced residual collapse were the contents of ray parenchyma and axial parenchyma .Nearly all the cells joined the course of forming the moment collapse and biggest moment collapse.Interval drying was fit for eucalypt plantation which was easier to make collapse.

研究表明:桉树不同家系间木材物理力学性质和化学组成存在差异;粗皮桉家系间、巨桉家系间、尾巨桉无性系间材色存在显著差异,株间、株内木材材色存在变异;桉树木材表面润湿性在巨桉家系间、尾巨桉无性系间存在着显著差异,在同一家系或同一无性系中,株间和株内也存在着相同的变化规律;桉材皱缩程度与其导管中侵填体的多少和导管壁上纹孔具有的附物多少密切相关,侵填体含物越丰富,纹孔附物越多,桉材越容易皱缩;最大瞬间皱缩是能产生更大干燥降等的临界点,在制定干燥工艺时,必须在最大瞬间皱缩发生时,采用温和条件,使已产生最大瞬间皱缩的细胞尽可能多的恢复,尤其不能使其产生永久变定;在常温条件下,影响残余皱缩的主要因子是射线薄壁细胞和轴向薄壁细胞含量;而对于瞬间皱缩和最大瞬间皱缩,几乎所有细胞都参与它们的形成过程;对于易皱缩的桉树木材,间歇干燥是最有前途的干燥方法。

With the aid of Zemax software, a three-mirror, unobscured, high-resolution optical system with large aperture, long focal length was successfully aligned by first collecting interferograms from several fields of all image plane, and obtaining the wavefront error, namely, obtained wavefront Zernike polynomials; then using the self-made program package to calculate the optical system misalignment.

利用Zemax光学设计软件与自编计算机辅助装调软件,实现了对大口径、长焦距、无中心遮拦离轴三反射镜光学系统的装调。通过Zemax软件模拟光学系统的失调模式,得到整个光学系统的波前像差,把波前像差代入到自编的复杂光学系统计算机辅助装调软件中,计算出光学系统的失调量,与引入的失调量对比,证明了其正确性。在实际的装调过程中,用小型球面干涉仪分别收集3个视场的干涉图,得到失调光学系统的失调量,用Zemax软件验证失调量数据的正确性,从而指导装调。

In this investigation fragments of Acropora pulchra were used in a semiprotected nursery in southern Taiwan between 1996 and 1998 to test, in situ, the possible effects of different factors on the generation of new branches and the initial skeletal extension rates of transplants.

在调查研究的美丽轴孔珊瑚是以半保护的养殖牧场在1996年到1998年於南台湾做测试,在那里,有可能会影响移植片段中的新分叉生长和骨骼生长速率之不同因子;这些变因在此研究中有片段的来源及长度、它们新的定向、存在的组织伤害和片段的位置。

In another cadaveric study, Adams and Hutton58found that the lumbar facet joints resist approximately16% of the intervertebral compressive force when standing erect versus near 0% when sitting, which helps explain the high intra discal pressures during unsupported sitting.59 Finally, after conducting in vitro experiments measuring induced loads on cadaveric lumbar facets, Lorenz et al.60 concluded that with increasing compressive loads, the absolute facet loads increases only slightly, so that the proportion of the axial burden borne by the l-z joints actually decreases with increasing stress.

另一项尸体标本的研究中,Adam和Hutton发现,当直立站立时,小关节承担了逐渐压力的近16%,而坐位时进0%,这解释了为什么在无支持的坐位时椎间的压力非常高。最后,Lorenz在尸体标本加载负荷后测量小关节的应力后,认为增加压力负荷时,小关节间的应力仅轻微增加,因此在轴向负荷中,小关节承担的比例实际随着应力的增加而减少。

The result notes that dynamic triaxial test preferably simulate the actual stress state of grading macadam, and Uzan model which considers the shear performance of material can better reflect stress states of grading macadam. Regression coefficients of the model obviously present nonlinear characteristic with moisture changed, and to further influence dynamic resilient module.More the module is larger, more diminishing rate of maximum tensile stress on pavement Bottom is smaller. To enhance draining function and strength, the gradation should been rigid controlled, and which the content of less than 0.075mm is controlled between 5~7% and spring-back is controlled between200~300MPa are appropriate.

结果表明,动三轴试验较好地模拟了级配碎石层的实际受力状态;Uzan模型考虑了材料的剪切性能,更能反映了级配碎石在隧道路面中应力状态;随含水量的变化,Uzan模型中回归系数变化呈明显的非线性特征,进而显著影响级配碎石的动态回弹模量的变化;级配碎石模量越大,路面层底的最大拉应力减小率越小;为了兼顾到级配碎石层的排水渗透功能和强度,应严格控制级配,特别是0.075mm以下的含量宜控制在5%~7%,级配碎石的回弹模量宜控制在200~300MPa之间。

Based on the model calculation,an FAPP ventilation system was madein Beijing Poultry Breeding Company.Through running test and a series ofphysical and chemical characteristic measurement,the distribution of flowspeed in length,and breadth was given.The average temperatureand rel-ative humidity,the amplitude of T and RH per day of 30 days in winter,and instantaneous T and RH in 24 hours wre measured in FAPP house,com-paring house and outside,the result shew that FAPP ventilation system wassuperior to comparing house.The dust concentration and microrganism con-tent were also measured in the rearing piriod of poultry,the value in FAPPhouse was junior to comparing house.

在模拟结果的基础上,设计了一套FAPP通风系统并在北京市种禽公司原种后备场种雏舍进行了实际运行试验和一系列的理化特性参数的测试,试验给出的正压管道式送风舍纵轴方向及横截面上气流速度的分布规律与模拟结果相吻合;通过对FAPP舍、对照舍及舍外冬季30天的逐日平均温湿度、温湿度振幅以及24小时瞬时温湿度的测试分析,显示了FAPP通风系统在冬季通风中明显优于负压通风系统;在雏鸡全周期的饲养过程中还对舍内粉尘与微生物的含量进行了测试,FAPP舍的值明显低于对照舍,这一结果为FAPP通风系统的推广应用提供了实验依据。

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But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。