Rotating-reciprocating mechanism converts rotating movement into reciprocating movement in order to move the screen.

旋转往复机构将旋转运动转变成往复移动以移动屏幕。

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To prevent the rotating movement of the workpiece, the moment at each clamping point caused by the cutting force has to be eliminated by the forces at the clamping points.

为了防止工件的旋转，每一个点由于切削力引起的扭矩都必须用夹持点的力去除。

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Egyptian officials have been keen to note that Mr Morsi would stay only for the few hours needed formally to pass the rotating chairmanship of the Non-Aligned Movement on from Egypt to Iran: a summit meeting, held every three years, was declared open on August 30th.

ECONOMIST: Egypt��s foreign policy