查询词典 PORR

Finally, it discusses problems concerning database recovery and garbage collection.

最后，讨论了PORR数据库的恢复与空间回收等问题。

Sadly, you will also find some porr souls afflicted with a condition they will never recover from.

悲哀的是，你还会发现一些备受折磨的可怜人，他们的境况，永远没法恢复。

People prefer a strong so that others admire you .not too weak so that people porr you !

如果可能的话，更强一些，宁可强的让人羡慕，也不能弱得让人可怜！

Sadly, you will also find some porr souls afflicted with a condition they will never recover from.

悲哀你还会发现一些备受折磨可怜他们境况永远没法恢复。

ABSTRACT This thesis deals with the data management problems in CAD/CAM system and develops a new CAD/CAM data management system——PORR, some of the key techniques of the system are discussed in detail.

本文工作主要是围绕着解决CAD/CAM系统中数据管理问题展开的，提出了一个新型的面向CAD/CAM的数据管理系统——PORR，并详细论述了其中几个关键技术的设计与实现问题。

The PORR introduces the principles of planning to describe the behaviours of the application area.

总之，通过引入规划原理，为数据库的事务设计、历史版本设计确定了一条可循准则。

Now you are porr in English.it is likely that you didn't study hard in junior middle school.butyou still have the chance to catch up with others,so you couldn't lose hart.

把英语学好不是很难。现在可能你的英语很差。看起来好像是你中学没有努力学习。

The thesis explains how to design the PORR logical structures based on EASYBAS file system [6] , and gives the mapping relation between logical and storage structures.

在逻辑、物理存贮设计方面，详细介绍了在EASYBAS文件系统的基础上实现PORR逻辑结构的方法，给出了逻辑结构与物理存贮结构之间的映射关系。

The PORR is implemented in FORTRAN 77 on APOLLO DN3000 workstation.

PORR系统全部用FORTRAN 77语言编写，在APOLLO DN3000工作站上实现。

By use of these relationships, the PORR data model can not only handle"entity"as defined in E-R model, but also handle directly objects with sub-class, complex objects and experienced knowledges as well, and hence, it can embed richer semantic informations for conceptual modelling.

文中详细论述了对象、联系的定义及其性质，提供了定义对象、联系的概念模式描述语言和经验性知识描述语言，并讨论了与应用程序（用FORTRAN 77语言编写）的接口设计、实现等问题。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。