集中在...上

In addition to energy, in good health, has also been a big influence on performance in visual acuity dropped substantially.

除在精力方面，在身体健康上也受到了很大的影响集中表现在视力大幅下降。

The result of framework protein and lysosome marked with fluorescence was observed in sym-acorched laser scaning microscope: red fluorescent β-tubulin and green fluorescent eathepsin in nerve cell were seen in distribution in the same sample. The distribution of both was the same, and was located in around nucleus in the early of differentiation, and in cytoplasm and apophysis in the maturity of differentiation.

共焦激光扫描显微镜镜观察荧光双标的骨架蛋白和溶酶体的染色结果：在同一标本上，不同波长的单光激发可分别见到发红色荧光的β-tubulin和发绿色荧光的组织蛋白酶D在神经元内的存在及分布情况，二者的分布区域大致相同，神经元分化初期，较集中分布在核周附近，神经元分化成熟则分布于胞质及突起内。

Based on the analysis of the mechanism of robot manipulators, a trajectory tracking controlling research model is first built up with ADAMS, and its mathematical model is formulated through the study of robot kinematics and dynamics. After the modeling errors are analyzed in practical robotic systems, a conception of centralized error is brought forward according to the theory of weighting functions. In the case of modeling errors' exist, the robotic uncertain model is derived by introducing an auxiliary control variable into inverse dynamic analysis. The control strategy of robust exponential convergence is applied to the robotic uncertain model, the applicable conditions and the applicable controller with this application are presented. The stable control effect under three main model uncertainties (parametric errors, joint disturbs, joint frictions) are systematically studied on the previously built research model. The problems of robust exponential convergence controller which often results in unstable output and so produces a large relative error when the input trajectory is in a small range are resolved by adjusting the control parameters based on the controller's structure.

本文在机械手的机械结构分析基础上，利用ADAMS建立了用于机械手轨线跟踪控制研究的机械手模型；通过对机器人运动学和动力学问题的研究，建立了机械手研究的数学模型；分析了机器人系统中模型误差的主要来源，根据加权函数法分析，提出了模型集中误差的概念；在存有模型误差的情况下，采用逆动力学结构并引入辅助控制量，由机器人误差模型推导了机器人非确定性模型；提出了采用鲁棒指数收敛法对上述机器人非确定性模型进行鲁棒镇定的控制策略，并给出了对机器人进行鲁棒指数收敛控制时系统不确定因素应满足的匹配条件；针对机械手研究模型，深入研究了鲁棒指数收敛控制器对机器人系统中常见的模型参数误差、关节扰动、关节摩擦等不确定因素的镇定控制效果；针对鲁棒指数收敛控制器易产生控制量振荡的问题以及在小范围内系统轨线跟踪的稳态误差过大问题，本文分别提出了基于控制器结构的控制参数调整法和基于轨线跟踪范围大小的控制参数分段切换法。

Data applications are set up resources for interoperable model of heterogeneous database environment or file system connected to achieve implementation of the middleware connectivity; at Distributed System, the essential data are concentrated in the data storage server, they can be a relationship between the type, compound document type, with a variety of multimedia-based storage format, or are encrypted or compressed storage, such middleware for virtual buffer at the network access, format conversion, extracting and other convenient

是为了建立数据应用资源互操作的模式，对异构环境下的数据库实现联接或文件系统实现联接的中间件；在分布式系统中，重要的数据都集中存放在数据服务器中，它们可以是关系型的、复合文档型、具有各种存放格式的多媒体型，或者是经过加密或压缩存放的，这类中间件将为在网络上虚拟缓冲存取、格式转换、解压等带来方便

"There's a big difference between speaking it in class and having conversations with other people learning and then when I spend a lot of time in a country where I have the ability to practice that conversationally, so it's not the same as being in Europe where you could pop across to France or you've got that international (inter-action) or in some of the Asian regions where there is such a difference in dialect."

"在课堂上说外语和与他人用英语交流有很大不同。然后我就有能力花很多时间在可以练习对话的国家学习，在可以随意去法国的欧洲，或在有众多不同方言的亚洲人集中的地域都是不一样的。"

In the transformation problem Marx did not intend to establish a proportionality between values and prices but, on the contrary, to show that individual exploitation and individual profit are disproportional unless some restrictive conditions are imposed.

"…在转型问题上，马克思没有打算在价值和价格间建立一个均衡，但是，相反表现为除非强加以限制性的条件，个人剥削和个人利润是不相称的…因此，很清楚转型问题的目的是揭示在资本主义经济中'社会总资本对劳动力的集中剥削'是怎样通过价格与价值的背离来使其模糊的；另一个目标是揭示活劳动是利润的唯一源泉。"

Written by pioneers in the study and analysis of very high cycle fatigue, Gigacycle Fatigue in Mechanical Practice compiles the most recent findings on gigacycle fatigue phenomena, focusing on improving the reliability and performance of key engine and machine components.

以开发者写在书房里和高循环疲劳的的分析，在机械实践过程中的Gigacycle 疲劳在gigacycle疲劳现象上编辑最新近的结论，集中于改进关键发动机的可靠性和性能和机器零部件。

I blushed at my inconsideration; but, without showing further consciousness of the offence, I hastened to add--'The truth is, sir, I passed the first part of the night in'--Here I stopped afresh--I was about to say perusing those old volumes', then it would have revealed my knowledge of their written, as well as their printed, contents: so, correcting myself, I went on, 'in spelling over the name scratched on that window-ledge.

我为我的粗心脸红，可是，为了表示我并不觉察到我的冒失，我赶紧加一句，"事实是，先生，前半夜我在——"说到这儿我又顿时停住了——我差点说出"阅读那些旧书"，那就表明我不但知道书中印刷的内容，也知道那些用笔写出的内容了。因此，我纠正自己，这样往下说——在拼读刻在窗台上的名字。注意，注意力集中

All is done in the mapping plane about the developed plane of acylindrical shell.Furthermore,applied orthogonal function expansion technique,the problem can be finally summarized into the solution of a series of infinitealgebraic equations.

在第四章中，在保角映射平面上给出了大开孔圆柱壳在外部载荷作用下，广义内力、边界条件以及孔边应力集中系数的一般表达式。

As the same section is concerned, near the bottom the maximum value of frequency appear within 1mm of bubble size, towards the water face this value tend to decrease, yet the corresponding size turns to increase; in the same time, the frequency is concentrated near the bottom and deconcentrated near the water face; under the experiment condition, the maximum frequency of the total section approximately appear at 0.5mm size; mean bubble size access 0 at bottom and increase acceleratively towards water face where tend to be infinite; total number increase during developing of aeration, and become steady when reach wholly developed area; on the same section, the total number in unit time tend to increase at first and decrease then, along the water depth.

对于同一断面，靠近槽底的测点气泡个数分布最大值出现在气泡尺寸小于1mm的范围内，朝水面方向各测点气泡个数分布最大值呈减小趋势，而其对应尺寸则呈现变大趋势；在靠近槽底，个数分布表现得比较集中，而在水面附近气泡个数分布曲线表现得低而平缓；实验条件下，整个断面上的气泡个数分布的最大值大体上出现在尺寸为0.5mm的地方；气泡平均尺寸在槽底处接近于0而朝水面方向迅速增大，且越接近掺气水流的水面，增加速度越快，最终趋于无穷大；气泡总数在掺气发展区内是沿程增加的，当掺气水流发展到一定程度后气泡总数就基本保持不变了；在同一断面上，各测点单位时间内的气泡总数随高度呈现出先增加后减小的趋势。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。