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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯 # y) n) C6 a4 z& R( W% [ z5 F, C
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網球拍線張力測試器ERT 300(開箱)4 N/ |2 J# Q; j( m# y
ERT 300 Manual
/ O% ]0 o: o* y2 C3 x" ]1 K% HThe right tension for every type of player7 ^2 _7 s7 _9 A9 i- u$ `
/ w9 t" ~ }- ?5 n% q" k: VDynamic Tension DT ( DT-value) / DT is the string bed stiffness- E% h/ X7 m" B
DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)/ y/ S( K- X( D) j% Q
DT determines the playing characteristics power and control." z, e. i0 A4 p5 x: k' N) D
Higher DT for more control / Lower DT for more power
! x! t& y( V; o$ kNot recommended to play tennis when DT below 280 D' ], @: C7 ?2 A4 `
Restring the racquet when the DT-value has decreased by 10% to 20%
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Lo DT 28-34 Defensive play / Club3 l: j5 P9 x* W- B& k5 U) P4 G' k
Mid DT 35-41 Dynamic,offensive play / Club,WTA
) \: C) q4 U& U9 `0 v; CHi DT 42-46 Fast,aggressive play / Club , WTA , ATP I7 h- J) f0 P5 ^
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.9 s( K) r" c6 M/ O T
" }$ o. Y0 X8 a5 u; s- T在stringforum左方DT database 選擇你的球拍,即可查到相關線種掉磅chart.
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發表於 2011-6-30 11:21:01
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