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Around the left axial rotation and backward rotation before the ball, respectively?

Beijing Nele2010-02-10 11:01:32 +0000 #1

joshsophia2010-02-10 11:11:17 +0000 #2
topspin and backspin
d4061892972010-02-10 11:45:47 +0000 #3
my side is called backward rotation of the ball for the next spin; forward rotation of the ball for top spin, do not know there is not.

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