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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯 ( O( t5 l. R* c* p, L
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網球拍線張力測試器ERT 300(開箱)5 C# U8 X s3 g, }) r; ]9 i7 L0 L
ERT 300 Manual
' V( |& N' @4 \( M$ {The right tension for every type of player5 @: r1 c/ O* {3 q! u
7 K& M4 W7 E K9 i6 e8 ~3 nDynamic Tension DT ( DT-value) / DT is the string bed stiffness, n. N8 I: Z' u6 U# J) c5 u1 q
DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)% \4 g8 i' r, y2 I, [% _2 m% i8 d
DT determines the playing characteristics power and control.+ a; c% s, `. |" }' R# Q
Higher DT for more control / Lower DT for more power
) W' d" S+ u! O" K) ?" iNot recommended to play tennis when DT below 28
Y# h) r9 i, ]0 }+ B2 iRestring the racquet when the DT-value has decreased by 10% to 20%- T2 L. v' \( g
3 D% r# I/ D8 D# x' kLo DT 28-34 Defensive play / Club
) I+ D/ `% I" [% G/ ~8 }- DMid DT 35-41 Dynamic,offensive play / Club,WTA
+ v! u$ }; \' nHi DT 42-46 Fast,aggressive play / Club , WTA , ATP
2 h/ t$ Y, S6 }# U7 K# {3 ]9 G, mHi+ DT 47-54 Very fast,extremely aggressive play / ATP
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) P6 w3 ]; F% n9 Z2 z* u: `6 zWithin the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.$ j4 V/ _1 \8 _; d1 D
5 i5 e) K9 L' S: M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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