From end to end, the Milky Way's starry disk, observable with the naked eye and through optical telescopes, spans 120,000 light-years.
从一端到另一端，银河系布满星星的圆盘横跨12万光年，可以用肉眼和光学望远镜观察到。
Optical disk holds much more, data than many magnetic disks.
光盘能够存储比磁盘多得多的数据。
A head crash in a fixed hard disk generally destroys the data, whereas the failure of a tape drive or optical disk drive often leaves the data cartridge unharmed.
对于固定的硬盘，磁头撞击通常会破坏数据，然而磁带或光盘驱动器的错误通常对数据盘碟是无害的。
MD system has the advantages of both the analog cassette tape and the optical disk medium.
MD系统兼有模拟盒式录音带和光盘介质的主要优点。
From an optical disk as a recording medium, a title retrieval section 310 reads title information about each title of motion picture data recorded on the optical disk.
标题搜索部分(310)从作为记录介质的光盘上读出关于记录在光盘上的运动图像数据的每个标题的标题信息。
Diffraction calculation is the basis of designing optical system of optical disk.
衍射计算是设计光盘光学系统的基础。
Compact discs (CDs) : Widely used optical disk format.
光盘(光唱碟)广泛使用的光学磁盘格式。
The paper tells the telemaintenance for optical disk database on library homepage using ASP technique, and gives the steps of the process and source codes of source program.
介绍了利用ASP技术对图书馆主页上的光盘数据库进行远程维护，给出整个实施过程的步骤及部分程序的源程序。
Designand Experiment of a driver circuit of LD, RF forward amplifier circuit and servo forward amplifier circuit for the optical disk driver are discussed emphatically.
重点讨论光盘驱动器中ld驱动器电路、RF前置放大电路与伺服前置放大器电路的设计与实验。
Optical head device, optical disk apparatus using optical head device, and heat radiation mechanism.
光头装置，使用光头装置的光盘设备，以及热辐射机构。
In order to achieve an ultra-fine mirror surface of mould for optical disk, diamond abrasive was adopted to polish the mould surface.
为了获得超光滑光盘模具镜面，选用金刚石磨料抛光光盘模具。
In this paper the principle of phase-change media for erasable optical disk and the materials required are discussed in detail.
本文对可擦除相变光盘的工作原理及其材料的要求进行了详尽的论述。
Optical disk is one of the representative products of precision injection molding technology.
光盘是目前精密注塑技术的标志性产品之一。
In optical-disk technology, a laser beam alters the surface of a plastic or metallic disk to represent data.
在光盘技术中，激光束改变塑料或金属盘的表面来代表数据。
After the radial dynamical characteristic of the optical disk system was analyzed, mathematical models for this characteristic of the optical disk system were proposed.
研究了光盘机械系统的径向动态特性，给出了描述该特性的完备数学模型。
Level detection circuit, phase change detection circuit, and optical disk apparatus.
电平检测电路，相变检测电路，以及光盘装置。
Validity of scalar diffraction theory must be checked, because the size of information mark (pit) of optical disk is comparable with or smaller than the laser wavelength.
由于光盘信息符(坑点)尺寸可以和波长相比较或更小，标量衍射理论的有效性必需进行检验。
Optical disk device, semiconductor device, optical disk and recording method.
光盘装置，半导体器件，光盘及记录方法。
The paper analyzes the principle of components of magneto optical disk driver focusing and tracking servo system, then designs and realizes a DSP based digital servo control system.
分析了磁光盘驱动器聚焦与循轨数字伺服系统各组成部分的原理，并设计和实现了一套基于DSP的数字伺服控制系统。
An optical disk can hold 650 megabytes of data-the equivalent of hundreds of floppy disks.
一个光盘可能容纳650兆字节的数据——相当于数以百计的软盘。
This scheme will obviously improve the reliability of optical disk memory.
该方案将显著地改善光盘存贮器的可靠性。
Thereby, the appropriate processing parameters for injection compression molding of optical disk have been obtained.
从而最终获得光盘基片注射压缩成型所需的合适的工艺参数值。
The erasable optical disk with high recording density, high stability, high data transfer rate, high carrier-noise ratio and low error rate arc the main points in the research and development.
当前的研究与开发的重点是具有高记录密度，数据传输速率快、稳定性好、载噪比大和误码率低的可擦型光盘存储材料。
Spot size detection method is representative method to obtain a focus error digital optical disk storage system.
光斑尺寸法是数字光盘信息存储中的典型聚焦误差探测方法。
The data of the time resolved fluorescent spectra and fluorescent life time of an organic optical disk named the azo dye doped thin film are given.
实际测量了一种有机光盘存储记录材料偶氮染料掺杂薄膜的时间分辨荧光光谱和荧光寿命。
Optical head is the core device of the optical disk drive. The aperture matching is the most important problems of optical head design.
光学头是光盘存储器的核心部件，光学头光束孔径匹配是光学头设计的一个至关重要的问题。
PRML changes entirely the way that the signal is read and decoded from the optical disk.
进而提出了PRML检测技术，从而彻底的改变了光盘信号的检测方法。
Optical disk, optical recorder, optical producing device, encrypted communication system, and authorizing system for use of program.
光盘，光记录装置，光重放装置，保密通信方式或程序使用许可方式。
Optical disk, optical recorder, optical producing device, encrypted communication system, and authorizing system for use of program.
光盘，光记录装置，光重放装置，保密通信方式或程序使用许可方式。
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