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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯
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" n v0 N& A/ y s2 w網球拍線張力測試器ERT 300(開箱)1 n0 _" }( q8 {6 n7 |9 u
ERT 300 Manual 1 K# |' d! s/ J/ l( O9 m
The right tension for every type of player
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Dynamic Tension DT ( DT-value) / DT is the string bed stiffness0 |1 V$ s$ B" N
DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
( S5 j8 ?% c/ oDT determines the playing characteristics power and control.) ]3 [. z2 A/ d5 R4 K9 ^+ l |
Higher DT for more control / Lower DT for more power
O: z+ R$ A. w* {9 g: MNot recommended to play tennis when DT below 28
# j+ O8 g5 ^* k' S" E$ lRestring the racquet when the DT-value has decreased by 10% to 20%
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6 @3 C0 c$ @# aLo DT 28-34 Defensive play / Club) w2 B, f2 m4 \3 t
Mid DT 35-41 Dynamic,offensive play / Club,WTA
" F: c* [0 B D% x5 q( xHi DT 42-46 Fast,aggressive play / Club , WTA , ATP6 p2 W$ W" \; d# R4 l
Hi+ DT 47-54 Very fast,extremely aggressive play / ATP. F) s- \- a# J; C& }, w9 F
9 M% ]! V! W/ s6 P/ hWithin 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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, P X' O! J; O! e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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