比较数
- 与 比较数 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The published estimates are not seasonally adjusted; therefore comparisons can only be made from one year to another.
已公布的估计数是不经季节性调整,因此比较,只能从一年到另一个。
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For compact hypersurfaces and highcodimension compact submanifolds initial data respectively, we prove that the flow hasa smooth solution for all time under almost optimal conditions. Those conditions arethat the second fundamental form on the initial submanifolds is not too large, the exter-nal force field, with its any order derivatives, is bounded, and the field is convex with itseigenvalues satisfying a pinch inequality.
我们分别对紧超曲面初值和高余维紧子流形初值证明了当初始曲率比较小,并且外力场除了要各阶导数一致有界外,还要满足凸性条件以及特征值的一个pinch条件时,这种热流的光滑解长时间存在。
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The traditional query tree optimization methods,parallel database optimization methods based on left linear trees and right linear trees,bushy trees,and operation of the forest,have their own pros and cons,they have been more in-depth and maturity of the study.The query optimization method based on multiple weighted tree has studied its model of parallel query plan,its complexity model of parallel query plan and query optimization algorithms.The semantic query method transforms an inquiry into one or several semantic equivalence inquiries then has to find and implement a strategy to achieve a better query.Agent-based parallel database query optimization using Multi-Agent technology to automatically search the integrity constraint conditions which are related to the determined query,there for,the efficiency between several relations' joins has been greatly improved.The parallel optimization algorithm,based on genetic algorithm which is suitable for multi-joins of cluster environment,has deeply studied the relations storage options,multi-joins query optimization and query processing and other key technologies based on cluster parallel database.
传统的查询树优化方法,即基于左线性树、右线性树、浓密树、操作森林的并行数据库查询优化方法,各有优劣,对其的研究比较深入、成熟;基于多重加权树的查询优化方法,研究了其并行查询计划模型、并行查询计划的复杂性模型和查询优化算法;语义查询优化方法将一个查询变换成一个或数个语义等价的查询,进而寻找并执行这些等价查询中具有较好实现策略的一个;基于Agent的并行数据库查询优化采用Multi-Agent技术自动查找与给定查询有关的完整性约束条件,使得多个关系间连接操作的效率得到很大的提高;基于遗传算法的并行优化算法,深入研究了基于机群并行数据库中关系存储的选择、多连接查询优化和查询处理等关键技术。
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Results Compared to the controlled groups,the lungs in cerebral hemorrhage groups existed hemorrhage,serosity exudation and inflammation infiltration(including macrophage and leucocyte),and the number of macrophage an...
结果与对照组比较,脑出血组肺组织存在明显渗出、出血及大量白细胞、巨噬细胞浸润,炎症细胞记数有显著意义P.05。结论脑出血可以通过引发炎症反应导致急性肺损伤;炎症反应在3~5d时最明显。
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The main chain and side chain have different effects on the surface properties.
研究了多烷基苯磺酸钠的结构,特别是侧链碳原子数的增加,对其表面活性的影响,并与其它烷基苯磺酸钠进行了比较。
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D. Comparing with traditional measurements of fractal dimension, the remarkable merits of digital image manipulation method are simple operation, fracture surface non-destroyed, test repeated, high metrical precision and so on.
d。与传统测量分形维数的方法相比较,数字图像处理法的显著优点是操作简单,不破坏断口,试验重复性强,精度高。
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To imagine such a situation, when you more than the amount of memory, and run a relatively large-scale process, will inevitably lead to a sharp reduction in the number of physical memory, and in this case the so-called "optimization software," the beginning of smart aleck, the data memory for paging to the hard drive, and the procedures needed for the operation of the data, which may have led to at the same time, the "optimization of software" tried to data paging to the hard disk, and the operating system attempts to read data from the hard disk into memory, a very large increase in hard drive read and write.
想象这种情况,当你内存数量不多,而又运行了比较大型的程序后,必然导致物理内存数急剧减少,而在这种情况下所谓的"优化软件"开始自作聪明,把占用内存的数据往硬盘上进行分页,而程序的运行需要这些数据,这可能导致了在同一时间内,"优化软件"试图将数据分页到硬盘,而操作系统试图将数据从硬盘读取到内存,极大增加了硬盘的读写。
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For easier comparison a modified Dean number was proposed, which took into account the curvature of the spherical line cut out by the helical element from the tubular housing.
为了更简易的比较,本文提出了 Dean 数,用来考虑管路外壳上的螺旋物切出的球形线的曲率。
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Patient of disease of patient of disease of spherule of kidney of 75 when the method compares classics kidney vivid check to confirm too with common Guang Jingtong each types and spherule of 60 blame kidney reachs cell of G1 of specimen of blood in the urine 3 times to count, make statistical analysis.
方法用普通光镜通过比较经肾活检证实的75例各类型肾小球疾病患者和60例非肾小球疾病患者一次及三次血尿标本G1细胞数,并作统计分析。
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According to change the parameter of the power cables (power cables length, account step, impulse width, fault location).
通过改变仿真中的参数(电缆长度、剖分段数、脉冲宽度、计算步长、故障点位置),来比较得到的仿真波形,计算故障点的距离,并从仿真图形中总结出波形的规律。
- 推荐网络例句
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Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".
歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。
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This is Kate, and that's Erin.
这是凯特,那个是爱朗。
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Articulate the aims, objectives and key aspects of a strategic business plan.
明确的宗旨,目标和重点战略业务计划。