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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯 $ y3 D) n8 q. ~# M' c
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網球拍線張力測試器ERT 300(開箱)
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, ~# V" D( {4 E, S- AThe right tension for every type of player0 _3 w" Z/ ?( m
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Dynamic Tension DT ( DT-value) / DT is the string bed stiffness) M W( i' }/ F* E" M$ U2 d
DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
! N5 j$ C3 }- z6 d, cDT determines the playing characteristics power and control.
- I C- e: n- a. F" UHigher DT for more control / Lower DT for more power9 M/ q1 c, }" g$ v9 ]" G
Not recommended to play tennis when DT below 284 c4 ?3 S8 S1 L. s6 e& C& y
Restring the racquet when the DT-value has decreased by 10% to 20%. r2 B/ X* a' G& I4 H) F
5 }6 P: ~; v7 g8 w' Z, |Lo DT 28-34 Defensive play / Club1 |! H/ A$ F& S! e5 _, R9 { A" m
Mid DT 35-41 Dynamic,offensive play / Club,WTA
9 ]7 M S9 b B: a; KHi DT 42-46 Fast,aggressive play / Club , WTA , ATP, B: Q$ s- N- r2 k4 n
Hi+ DT 47-54 Very fast,extremely aggressive play / ATP
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Within the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.
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4 k, @( x: [' L/ ?/ }& ]在stringforum左方DT database 選擇你的球拍,即可查到相關線種掉磅chart.% W5 p8 Q' ]& @7 m9 A& g
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發表於 2011-6-30 11:21:01
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