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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯
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+ U$ J) ^* M- D& Y0 A4 i網球拍線張力測試器ERT 300(開箱)& S, v5 M& G/ F
ERT 300 Manual
/ t4 M" ?3 s. }( l% W; RThe right tension for every type of player
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Dynamic Tension DT ( DT-value) / DT is the string bed stiffness
4 l) i) r5 j; i& F: j) }DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact). i2 q2 q! x* ?) V; _; s% k
DT determines the playing characteristics power and control.1 Y6 \0 h7 r7 D6 F+ J& r
Higher DT for more control / Lower DT for more power
, x. L5 H0 L7 Z4 ^Not recommended to play tennis when DT below 28# P* ~3 ~; W/ B! e
Restring the racquet when the DT-value has decreased by 10% to 20%
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Lo DT 28-34 Defensive play / Club( H) o s. Y4 A: a% h6 z- y
Mid DT 35-41 Dynamic,offensive play / Club,WTA0 B3 [ J" W/ m! ~
Hi DT 42-46 Fast,aggressive play / Club , WTA , ATP
' w5 o( ~: M! G+ ^3 wHi+ DT 47-54 Very fast,extremely aggressive play / ATP7 G5 H3 l6 W/ `% U- |4 r( Q
; M- w: R4 G8 q, g6 rWithin the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.2 a4 H- P% B2 ?* `. m
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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.1 m( F6 ~% l5 b( U. M) }( H ~
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發表於 2011-6-30 11:21:01
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