到目前为止，官方的Android Market在文本编辑应用领域的收入微不足道，大多数应用只是简单的笔记本程序。
To date, the official Android Market has had slim pickings when it comes to document editing, with the majority of apps being simple notepads.
目前主要关注的应用领域是网络系统、无线网络、3g应用、消费电子等。
Recently, net system, wireless net, 3g application and consumer electronic are applied by embedded system.
文章介绍了各项洁净煤技术的主要技术特征和应用领域，以及世界各国目前在洁净煤技术方面的研究进展。
The article introduces the main technical characteristics and the application fields of clean coal technology, and it also presents the research progress on clean coal technology in many countries.
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