机械

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http://kmoddl.library.cornell.edu/index.php

http://en.wikipedia.org/wiki/Category:Kinematics

http://opensourcemachinetools.org/

http://kmoddl.library.cornell.edu/tutorials

http://pergatory.mit.edu/

http://www.animatedengines.com/

Boxter Engine     Oval Regulation  

Malta Cross movement



GENEVA WHEEL  

Sewing Machine




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