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| Change of belt's tooth shape caused by bending and pressure on the pulley | 142 |
| November 2012 | December 2012 | January 2013 | February 2013 | March 2013 | April 2013 | May 2013 | |
| Change of belt's tooth shape caused by bending and pressure on the pulley | 7 | 6 | 12 | 10 | 9 | 7 | 8 |
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