RDBMS designers concentrated on optimizing I/O and tried to align the data access patterns with the block structure imposed by the drives.
RDBMS设计者的精力主要集中于优化I/O和设法用驱动器的块结构来安排数据访问模式。
Why did Windows use the FAT structure instead of a conventional linked list with a next pointer for each data block of a file?
为什么窗户使用脂肪结构代替传统的与下一个指针链表的每个数据块文件?。
The state space structure of a system which can be block decoupled is obtained with the help of the coordinate transformation.
对给定分割,给出了可以块解耦的系统状态空间结构和导致这种结构的座标变换。
The house, built in the mid-1950s, was essentially a one-room structure, long and thin, divided down the middle, with the bathroom dropped like a block in the center.
房子建于20世纪50年代,大体上是一个单间结构,形状狭长,中间的浴室将整个房间分隔成2部分。
According to the special structure of precast block of inverted arch for TBM construction tunnel, the dynamic construction state is modeled by FEM with surrounding rock - structure calculating model.
针对TBM施工隧道仰拱预制块的特殊结构,采用围岩-结构模式,进行了模拟施工动态的受力影响计算分析。
With the features of mono- block cast type wallboard slippage press roller structure strong rigidity better stability and suitable for high-speed operation.
整体铸造式墙板,滑移式压辊结构,刚性强,稳定性好,适用于高速运转。
The practical structure of a precision bending die with a turning block is presented.
介绍了翻转模块式精密弯曲模的实用结构及模具工作过程和结构特点。
A new diamond block with water groove and the round saw are shown. The structure and property of the block is introduced.
提出一种带水槽的新型直槽式金刚石节块及圆锯片,并介绍了该节块的结构与性能。
The experimental results show that this block and black round structure is composed of pearlite blocks with variable plate intervals.
结果表明,这种黑色团状异常组织是由片间距不同的团状珠光体组成。
A water tariff structure with step-wise increase or decrease of the price per unit water from one block to the next.
一种水价结构,水的单价从一个水量段到下一个水量段逐步增加或者减少。
The technique of ATRP has been used to synthesize the model polymer with various structure, block copolymer, graft copolymer, star-shaped polymer and hyperbranched polymer.
通过原子转移自由基聚合可以方便地合成各种结构的模型聚合物,包括嵌段、接枝、星形及超支化共聚物等。
The practical structure of a precision bending die with a turning block is presented. The working process and structure characteristics of the die are described.
介绍了翻转模块式精密弯曲模的实用结构及模具工作过程和结构特点。
The south anchorage of Xihoumen Bridge is a gravity type rock-embedded structure cast with large cubic amount of concrete and is typically a very massive concrete block.
西堠门大桥南锚碇为重力式嵌岩结构,混凝土方量大,为典型的超大体积混凝土块体。
The proposed method organized bathymetric data utilizing grid block structure, interpolated depth at grid node adopting three mathematical models and thinned data with multi-scale grid.
利用格网分块结构高效组织海量多波束水深数据,分别采用三种数学模型内插网格节点水深值,实现了不同网格尺度下的数据抽稀。
Analysis is done to the causes of reject A30 block with sand inclusion, i. e. the elements of molding sand feature; cast structure, casting speed and arrangement for casting system, etc.
对A30气缸体夹砂废品产生的原因,即型砂性能、铸件结构、浇注速度、浇注系统的布置等方面的要素进行了分析。
Equivalent triangle structure is constructed with hinged bar elements to precisely simulate the effect of wire rope pulley block in the finite element analysis of structure of construction machines.
在工程机械结构有限元分析中,采用铰接杆单元构造等效三角结构,准确的模拟钢绳滑轮组的作用。
The utility model relates to a natural marble and granite compound splicing block with a static layer structure, which belongs to a novel architectural decorative material.
本实用新型涉及一种静态层状结构的天然大理石花岗石复合拼块,属新型建筑装饰材料。
This article introduces Digital Camera system with Single-Chip TMS320DSC21 DSP of research cellular. Narrative the system structure and run functional block diagram and master behaviour.
本文介绍一个基于单片tms320dsc21DSP的用于细胞研究的数字摄像系统。叙述了系统结构、工作原理以及主要性能。
Compared with the traditional jig using V-block, this jig is of simple structure and easy assembling.
与V形块定位夹具相比,该夹具具有结构简单、制造及装配工艺性好等特点。
The entity type is the fundamental building block for describing the structure of data with the entity data Model.
实体类型是基本的建置组块,可透过实体资料模型描述资料的结构。
Based on the stability analysis of key-block with large structure, the feasibility of gob-side entry retaining has been demonstrated.
通过对大结构关键块稳定性分析,论证了综放沿空留巷的可行性。
This project probe into the procedures and techniques for validating the structure of complex faulted-block with applications to Huanghua basin.
本项目的任务是以黄骅盆地某些油田为例,探讨复杂断块构造的构造确认程序和方法。
On the basis of analyzing the structure characteristics of TAS - 2a, BAB-type block copolymer is put forward, with its structure being anchored group in the centre.
在分析TAS-2a结构特征的基础上,指出其结构为锚固基团处于中央的BAB型嵌段共聚物。
The studying fault block is a typical complex faulted block reservoir, which is with many faults, fractured structure, strong heterogeneity and great difficulty in exploration.
某断块为一典型复杂断块油藏。区内断层多,构造破碎,非均质性强,开发难度较大。
The invention provides a silicon-acrylic three-block copolymer with low surface energy, whose structure of reaction product is accurate, and the original skeleton construction of each block is kept.
提供一种反应产物结构明确且保留各嵌段原有的骨架结构的具有低表面能的硅 丙三嵌段共聚物及其制备方法。
Within the north structure block, with the influence of the thin seam thickness, the thickness of the structure coal seam was relevantly thin.
在北部构造区内受煤层厚度较薄的影响,构造煤厚度相对较薄。
But when loops, several spread-spectrum radios and centre control unit (moving block system with 'centralized' structure) fail, the system can not be running in the ATC mode.
但是当环线、多个扩频电台、中央控制单元(“集中式”移动闭塞系统)等设备出现故障时,系统将无法工作在ATC模式下。
But when loops, several spread-spectrum radios and centre control unit (moving block system with 'centralized' structure) fail, the system can not be running in the ATC mode.
但是当环线、多个扩频电台、中央控制单元(“集中式”移动闭塞系统)等设备出现故障时,系统将无法工作在ATC模式下。
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