The TD/ CDMA (TDD), FDD and particularly TD-SCDMA technologies are presented with brief introductions and comparisons in terms of technical background and application environments.
本文首先从技术背景和应用环境等方面对TD/CDMA（TDD）和FDD，特别是中国提交的TD—SCDMA技术作了介绍和比较。
It provides the background knowledge of Student's Book, such as introductions of famous people, interesting places, pictures, videos, and website, etc…
提供教材中各类知识的背景资料，图片，及相关书目，相关连接，图像资料。
It provides the background knowledge of Student's Book, such as introductions of famous people, interesting places, pictures, videos, and website, etc…
提供教材中各类知识的背景资料，图片，及相关书目，相关连接，图像资料。
应用推荐