Without correct column distribution statistics, DB2 may not have enough information to make the best choice when choosing an access path to the data-especially if data is heavily skewed.
在选择数据的访问路径时，如果没有正确的列分布统计数据，DB 2可能没有足够的信息来做出最佳的选择，尤其是如果数据出现严重误差。
Without column data-value distribution information in the catalog, DB2 will assume an even distribution of values, which may lead the optimizer to a sub-optimal access path.
如果编目中没有列数据值分布信息，DB 2就会假设值是均匀分布的，这可能导致优化器选择非最优的访问路径。
Commonly used Linux executables such as mkdir typically use a common path that your Linux distribution sets.
常用的Linux可执行文件，如mkdir，通常使用Linux分布设置的通用路径。
If you unzip to a drive d:, and allow the original directory structure to be created, you will end up with a base path of d: \ emacs-20.7, where d: is the drive on which you unpacked the distribution.
如果将该文件解压缩到驱动器d：，并且允许按文件的原始目录结构创建，则基本路径为d： \emacs- 20.7，其中d：是该分发版在解压缩后所在的驱动器。
Assuming you have built and installed OpenSP or found a pre-built binary distribution, again the first thing you need to do is update your PATH so the executables can be found.
假设已经构建并安装了OpenSP或者找到预先构建好的二进制文件分发版，则要做的第一件事还是更新PATH，这样就可以找到可执行文件了。
Assuming you unpack the distribution to the path d: \ SP, you would need to add d: \ SP \ bin to your path.
假设将sp分发版解压缩到路径d： \SP，则将需要将d： \ SP \bin添加到PATH中。
In the future, power cable nearly becomes the main path for the power transmission and distribution, especially in the city and the power user of large scale industry.
特别是在城市及大型工业电力用户，电缆几乎成为今后主要的电能传输、分配的途径。
Degree distribution and average path length are two important structural characteristics of complex networks.
度分布和平均路径长度是复杂网络的两个重要结构特性。
The pore size and distribution of soil in the different stress path tests were studied by the optical microscope.
利用光学显微镜对不同应力路径三轴试验的土样进行孔隙大小及分布的对比研究。
The results indicate that the new path integration method is efficient in the studying the probability distribution of ship nonlinear roll motion from the numerical simulation results.
数值模拟的结果表明新的路径积分法对研究船舶非线性横摇运动概率密度分布是十分有效的。
The average path length of Internet with power law degree distribution is studied in this paper.
针对具有幂律度分布的复杂网络的平均最短路径长度进行了研究。
The shadow affect is logarithmic normal distribution, and the multi-path fading is Rayleigh distribution.
阴影效应服从对数正态分布，而多径衰落服从瑞利分布。
After enough turns of simulation, the distribution of the total work period can be determined, at the same time the critical path can be found in the probability concept.
对大量仿真计算结果进行统计分析，可以得到总工期及关键路线的概率分布结果，为施工管理提供更多的信息。
The present network is a small-world network with short average path length and high degree of clustering, and its degree distribution follows a double power law.
研究表明，中国城市航空网络是一个小世界网络，具有短的平均路径长度和大的簇系数，且其度分布服从双段幂律分布。
It is shown that the present network is a small-world network with short average path length and high degree of clustering, and its degree distribution follows a double power law.
研究表明，中国城市航空网络是一个小世界网络，具有短的平均路径长度和大的簇系数，且其度分布服从双段幂律分布。
When an accelerator is used to treat tumour of illness, the distribution of doses is changed by commonly inserting a wedge into the path of radial beam.
利用加速器治疗肿瘤时，通常要在射线束的路径上加入楔形板以改变平野的剂量分布。
It's very important to study the visitor's travel path and time-space distribution for planning and flow managing in the World EXPO.
在规划设计和交通管理中，对参观者的参观行为及其时空分布特征进行研究具有十分重要的意义。
In this paper we discuss the distribution of vertices of degree 5 on the longest path and cycle and thus give a characterization of contraction critical 5-connected graph in a certain aspect.
讨论收缩临界5 -连通图最长路和最长圈上5度点的分布情况，刻画收缩临界5 -连通图的结构。
The authors have analyzed statistical parameters including path-length, clustering coefficient and degree distribution of public transport networks in 5 Chinese cities.
运用复杂网络的研究方法对我国5个大城市的公交网络结构进行实证分析，统计了路长、群聚系数、度分布等物理量。
Residual stress distribution along the thickness is almost the same in the flow path and the stress value near the end is a little higher than that near the gate.
残余应力沿壁厚分布的形状在流动方向上基本相同，但是流动末端的应力值稍大于流动入口处。
The teaching of the kinetic theory of gases is rearranged with Maxwell velocity distribution law, Boltzman distribution law and free path distribution law.
用麦克斯韦速度分布律、玻耳兹曼分布律、自由程分布律整合了气体动理论的教学。
The results showed that the distribution of temperature field is mainly affected by the gas flow path and the distributions of heating source, sintered products, and graphite boards.
认为石墨筒内的温度场分布主要取决于发热体、烧结制品和石墨舟皿的布置位置以及气体的流动方式。
By the Monte Carlo modeling, the radial distribution, penetration depth and transmission path length of the diffuse photons are analyzed.
使用蒙特卡罗模型分析了手掌漫反射光子的径向分布、在组织内的穿透深度及传输程长的分布规律。
With the method of differential optical absorption spectroscopy (DOAS), aerosol along the light path is monitored and its size distribution is measured with double optical path method.
介绍了利用双光路差分吸收光谱(DOAS)技术监测大气气溶胶并反演其粒谱分布的新方法。
The path line distribution of flue gas in the scrubber becomes more homogeneous with the increasing flue gas velocity at a stationary slurry spray flux.
浆液喷淋量一定时，随烟气流速增大，塔内烟气迹线分布情况趋于均匀。
The pressure field distribution, velocity field distribution and path lines of the separated medium flowing in hydrocyclone were numerically simulated.
对旋流器压力场、速度场和分离介质运动迹线分布特征的数值模拟进行了研究。
Reaction rate constants were calculated upon the products distribution. The main reaction path was given out and the effects of reaction conditions on it were investigated.
考察其反应产物分布，计算反应网络中各步的反应速度常数和热力学平衡常数，探讨反应网络的主线和反应条件对主线的影响。
The influence of loading distribution stress path and nonlinear deformation on foundation behaviour are studied in this paper. A new settlement formula for foUndations is proposed.
本文研究了荷载分布、应力路径和非线性变形对地基性状影响。提出了一个新的基础沉降量计算公式。
Existing routing protocol implementations are monolithic, bundling together a database with an optimal path calculation algorithm and a network state distribution mechanism.
现有路由协议的实现是单一的，并且将数据库、最优路径计算和网络状态分发机制捆绑在一起。
Existing routing protocol implementations are monolithic, bundling together a database with an optimal path calculation algorithm and a network state distribution mechanism.
现有路由协议的实现是单一的，并且将数据库、最优路径计算和网络状态分发机制捆绑在一起。
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