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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯 % t' s S8 E9 |
' Y; N6 d# B2 O4 L6 q3 j網球拍線張力測試器ERT 300(開箱)
* s' ^7 W: N' N5 Z K0 GERT 300 Manual # C* G, g; L5 C6 s& F
The right tension for every type of player: B0 t% D! O* R' V. Q/ f
3 s* E! M, Q( ?2 }: `9 D& sDynamic Tension DT ( DT-value) / DT is the string bed stiffness9 w) T S7 @" z$ J2 _) C" ~
DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)) r6 @! H7 d' _1 m" d
DT determines the playing characteristics power and control.' L- a8 q# K" e" U6 k' d9 c# l0 F4 x
Higher DT for more control / Lower DT for more power
5 x/ b% F) H& u3 tNot recommended to play tennis when DT below 28/ y$ }6 \# i( o4 v- Y8 m0 g7 c6 X) D2 i
Restring the racquet when the DT-value has decreased by 10% to 20%
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# _2 s! Z; Y% f" rLo DT 28-34 Defensive play / Club
- y7 q. }* e3 j' T7 PMid DT 35-41 Dynamic,offensive play / Club,WTA' ~' U: B9 l# W7 K" U% @9 A4 P
Hi DT 42-46 Fast,aggressive play / Club , WTA , ATP+ X' K- H4 }6 x$ K8 J( I, E3 \/ a
Hi+ DT 47-54 Very fast,extremely aggressive play / ATP
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7 s# Y! g: G8 r8 _' LWithin the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.* p# ^3 M4 i2 Q8 l% g
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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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