求翻译：摘要：在激光出现以后，光学和许多科学领域互相结合，相互渗透，因此激光在通信方面的应用与发展也更加广泛。前一部分要介绍的是激光技术的应用原理，中间一部分将介绍激光通信的应用，最后一部分要介绍的是激光通信的发展概况及发展趋势。是什么意思？

Abstract: The emergence of laser, optics and many sciences with each other, mutual penetration, so the application of lasers in communications and development more widely. The first part is to introduce the principle of laser technology, the middle part of the application of laser communications wil

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Abstract: Appears after the laser, optics and many scientific domains unify mutually, seeps mutually, therefore the laser is also more widespread in the correspondence aspect application and the development.The preceding part must introduce is the Laser Technology application principle, the middle p

Summary: after appeared in laser, optics and many fields of science and associate, interpenetration, laser application in communication and development are more widely. Described in the previous section is the principle and application of laser technology, in the middle part will introduce the appli