本文是对 Android SDK1.5版的英文开发资料 Android Development Guide 一文应用程序框架部分的翻译，覆盖了 Android应用开发所有主要的概念。-This article is part of the translation of the English development data for Android SDK1.5 version Android Development Guide application framework, covering t

中国3G技术的发展历史，英文资料，写背景的同学可以下载看看。- China 3G technology development history, English, writing background of the students can download to see.

关于QPSK的英文资料，超级好用，亦可下载看看。- QPSK on the English information, super easy to use, can be downloaded to see.