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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯
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網球拍線張力測試器ERT 300(開箱)7 P9 G0 e! r. b6 \* s
ERT 300 Manual
3 p' a- c8 K9 g0 t- f5 NThe right tension for every type of player
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Dynamic Tension DT ( DT-value) / DT is the string bed stiffness% n* N4 O" s' n, _! |2 m
DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
2 S/ G$ X: I$ Q6 t" A9 }3 _0 nDT determines the playing characteristics power and control.3 E# \5 C; ^3 N7 ?6 S# ^
Higher DT for more control / Lower DT for more power
2 b, T( @: Y6 ]* f3 E3 h# A7 ]Not recommended to play tennis when DT below 28
m% [5 ^5 i% C; ~Restring the racquet when the DT-value has decreased by 10% to 20%
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Lo DT 28-34 Defensive play / Club% C0 o; F6 @6 _% _9 ^
Mid DT 35-41 Dynamic,offensive play / Club,WTA
( s4 \) i7 S* z% q6 AHi DT 42-46 Fast,aggressive play / Club , WTA , ATP; }+ i8 z$ z. E: G) g: U" q: Y J( ^
Hi+ DT 47-54 Very fast,extremely aggressive play / ATP7 F/ n3 a. d6 m( g
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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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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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