查询词典 virtual memory

Protected mode allows for 16M of memory but is also capable of protecting the operating system and programs from accident and deliberate destruction by users, a feature that is absent in the single-user 8088/8086 Virtual memory is a way of fooling the microprocessor into thinking that it has access to an almost unlimited amount of memory by swapping data between disk storage and RAM.

在保护模式下系统可用16M的内存寻址并且可防止操作系统或程序被用户不经意或故意破坏。这个特征是单用户8088/8086所不具备的。所谓虚拟内存就是通过在磁盘存储器与RAM中交换数据将微处理器骗过，使之认为它有无限大的内存寻址空间。

The contents of the course include: what operating system are, what they do, how they are designed, and where they came from; a general history and explanations of computer system, and some discussion on hardware and the relation between operating system and other software; concept of process, process states and process control block, process queue, management of processes; concepts of sequent programming and parallel programming, process synchronization and its application, process communication; scheduling level and job state transition, job scheduling, process scheduling, and methods for scheduling; deadlock and its necessary conditions, deadlock prevention, control and recovery of deadlock; fixed partition, multiple partition and replacement partition memory management, swapping and overlays; page, segmentation and segmentation with paging storage management, basic concept of virtual memory management, and page, segmentation and segmentation with paging memory management.

课程的内容包括：计算机系统概述、操作系统的形成、发展、功能、特性、类型和发展趋势；操作系统的硬件环境、操作系统与其它系统软件的关系；进程的概念、进程的状态和进程控制块、进程队列、进程的管理；顺序程序设计和并行程序设计概念、进程间的同步与互斥、同步机构应用、进程间通信；调度的层次和作业状态转换，作业的调度、进程调度、调度算法；死锁问题的提出、死锁的必要条件、死锁的预防、避免、控制和恢复；固定分区、可复分区、多重分区内存管理技术以及覆盖技术和交换技术；分页域、分段域、段页域存储管理技术、虚拟存储管理的基本概念、分页域、分段域、段页域虚拟存储管理。

Some techniques, such as multiprocessor organization, pipeline, virtual memory, ring-protection of main memory, multiple memory modules with address interleaving, cache, RAS and 1/O standard interface, have been employed in the system. A simple form of single-arm-latch has been adopted. Operating system used in HDS-9 is symmetric to each processor.

此机在系统结构上采用多重处理机结构，流水线控制技术，虚拟存储器技术，存储器环状保护技术，存储器多模交叉访问，高速缓冲技术，RAS技术，统一标准接口的I/O系统；在工艺技术方面采用高密度组装技术，用SSI-TTL电路组成单臂门闩触发器系统；在系统软件方面采用匀称或平等的操作系统来处理多重处理机关系。

Some techniques, such as multiprocessor organization, pipeline, virtual memory, ring-protection of main memory, multiple memory modules with address interleaving, cache, RAS and 1/O standard interface , have been employed in the system. A simple form of single-arm-latch has been adopted.

此机在系统结构上采用多重处理机结构，流水线控制技术，虚拟存储器技术，存储器环状保护技术，存储器多模交叉访问，高速缓冲技术，RAS技术，统一标准接口的I/O系统；在工艺技术方面采用高密度组装技术，用SSI-TTL电路组成单臂门闩触发器系统；在系统软件方面采用匀称或平等的操作系统来处理多重处理机关系。

Memory aborts,which can be used to implement memory protection or virtual memory

内存异常中断，可以用于实现内存保护或虚拟内存

Figure 9 describes one embodiment of virtual graphics local memory apportioned with 67% graphics local memory and 33% system memory.

图9描述采用67％的图形本地存储器和33％的系统存储器分配的虚拟图形本地存储器的一个实施例。

The Virtual Reality be used a new human-computer interface, not only make the attender immerse himself in virtual world of the calculator, but also provide a kind of direct communication means between customers and virtual world.

虚拟现实作为一种新型人机接口，不仅使参与者沉浸于计算机产生的虚拟世界，而且还提供用户与虚拟世界之间的直接通讯手段。

Second, based on the screw theory, the'virtual joint'concept was proposed. By means of this concept, the conventional trajectory planning in Cartesian space was converted in the 'virtual joint'space, that is, the complex trajectory planning in Cartesian space was simplified by utilizing the trajectory planning in the'virtual joint'space.

第二、基于旋量理论提出了"虚拟关节"的概念，利用这一概念可以将传统的笛卡尔空间的轨迹规划转化成"虚拟关节"空间的轨迹规划，也就是说，利用简单的关节空间的轨迹规划方法实现了复杂的笛卡尔空间的轨迹规划。

Research the composing rule of virtual path, design a virtual walkthrough system to browse the host machine in virtual environment; put forward the idea to manage the devices in beverage-packaging production line and can let designers understand explicitly the devices condition in production line.

分析了虚拟路径的构成原理，设计虚拟漫游系统来浏览虚拟生产线；提出虚拟设备管理的思想，使设计人员对设备的工作情况一目了然。

It is reported, alliance of industry of ZhongGuanCun virtual reality is to be in Haidian of garden of ZhongGuanCun science and technology to manage committee, ZhongGuanCun field below leadership of association of industry of new and high technology, by virtual reality (the cool one's heels when bird of allusion, crystal stone, red Beijing, trends is being inspected in VR) navigate enterprise is initiated hold water, aim to condense industry industry catenary through alliance each domain delegate, build virtual reality industry to promote an orgnaization, build development of butt joint of technology of industry learning communication, capital, market application, talent to wait for platform.

据悉，中关村虚拟现实产业联盟是在中关村科技园海淀园治理委员会、中关村高新技术企业协会领导下，由虚拟现实领航企业中视典、水晶石、红京鸟、动态时空等发起成立，旨在通过联盟凝聚行业产业链各领域代表，建立虚拟现实产业促进机构，搭建行业学术交流、资金技术对接、市场应用、人才开发等平台。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。