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。
In optical recording, a microscopic depression made on the disk surface by the recording laser beam. Recorded information is contained in the pits and the Spaces between pits-lands.
在光记录技术中，由记录激光束在光盘表面上烧蚀的一个微小凹陷区。记录信息包含在凹区和凸区中。
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。
In optical recording, a microscopic depression made on the disk surface by the recording laser beam.
在光记录技术中，由记录激光束在光盘表面上烧蚀的一个微小凹陷区。
An optical disk apparatus records information by irradiating a laser beam from a pickup onto an optical disk.
一种光盘装置，通过将来自拾取器的激光束照射在光盘上记录信息。
An optical disk apparatus records information by irradiating a laser beam from a pickup onto an optical disk.
一种光盘装置，通过将来自拾取器的激光束照射在光盘上记录信息。
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