Nowadays, power line digital carrier equipments have been used widely in China.
目前，电力线数字载波通信设备已经在国内得到了广泛的应用。
Introduces some protection technologies of digital book, analyzes their insufficiency, and expounds two new off-line digital book encrypt protection modes.
介绍了目前已有的一些数字图书保护技术，分析了它们的不足之处，提出了两种离线型新型数字图书安全保护方法。
The points of view of this paper are valuable reference for manufacturing, testing and industrial management of power line digital communication equipments.
文章提出的论点对电力线数字通信设备的生产、测试和行业管理有一定参考价值。
The points of view of this paper are valuable reference for manufacturing, testing and industrial management of power line digital communication equipments.
文章提出的论点对电力线数字通信设备的生产、测试和行业管理有一定参考价值。
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