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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯
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2 l* L. F: P5 g& i, A2 E; W) B& r網球拍線張力測試器ERT 300(開箱)5 r9 [- f/ `) {
ERT 300 Manual - |. K3 i- K& }9 e7 R9 e
The right tension for every type of player: L: N1 _. h8 l/ S" Z! ~
8 a) C' f1 Y4 u" D: Z% B( cDynamic Tension DT ( DT-value) / DT is the string bed stiffness
' O6 t- F- A: H' J5 @% ]( k6 {DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)" C0 `9 k3 A$ \; n- b
DT determines the playing characteristics power and control.0 m( S$ E$ F; k" d
Higher DT for more control / Lower DT for more power
7 K2 \ K7 G# j" D% O6 l, U( C: ?: oNot recommended to play tennis when DT below 28
3 {, x: F% y2 C$ L/ L5 L. dRestring the racquet when the DT-value has decreased by 10% to 20%% f3 n4 ]- @* f: D# Q
0 D" }# k3 A+ j# g" K5 @Lo DT 28-34 Defensive play / Club# ^3 i' B, U7 ^, X! o
Mid DT 35-41 Dynamic,offensive play / Club,WTA# w! l9 a& t: j8 x. q/ z9 _9 T% Q
Hi DT 42-46 Fast,aggressive play / Club , WTA , ATP
+ U" h H8 F _1 ]9 _% e' lHi+ DT 47-54 Very fast,extremely aggressive play / ATP2 ^7 s* y) O) L8 o
" [& E3 R) z7 A% A9 @Within the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.5 o/ u" ?, R& k7 M- ?" r c; c
9 q- s! _, l2 K9 F4 ~) W5 S# A, Z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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