Revolution surface is most often used in solid modeling system.

在立体造型系统中，旋转曲面是最常用的曲面。

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The motor is characterized in that a revolution surface circling around the rotating shaft is connected with an axial outer end of the inner fan blade.

其特征在于，所述内风扇叶片的轴向外端连接于一环绕所述转轴的回转面。

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The animation programs of the making revolution surface is compiled, and a general coordinate formula of geometric transformation is deduced about an arbitrary revolution curve around a rotation axis.

给出旋转曲面生成过程的动画程序，并导出了任一曲线绕任意轴旋转的坐标间几何变换公式。

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"The Muslim Brotherhood has been used as a tool by the SCAF to stop the real change, just to make a change on the top, on the surface, in order to change the revolution into a coup d'etat, " al-Aswani said.

CNN: Brotherhood steers tricky currents of post-Mubarak Egypt

Scientists estimate that the average acidity of surface ocean waters worldwide is now about 30% higher than before the Industrial Revolution.

BBC: Arctic Ocean 'acidifying rapidly'