SD卡技术规范，英文原版，希望有助于有关SD卡的设计开发。-SD Card technical norms, the English original, hoping to contribute to the SD Card design and development.

这是OSSIMPLANET开发文档，对于学习三维数字地球的有很大的帮助-This is OSSIMPLANET development documentation for learning three-dimensional digital earth is very helpful

开题报告，沈阳理工大学姿态王开发，开题，-Opening report, Wang, Shenyang University of attitude development, open discussion,

A HISTORY OF FATIGUE Abstract--The history of fatigue from 1838 to the present is described in detail, with special emphasis on the German contribution in the time period of 1920-1945. A number of distinguished scientists and engineers, and their