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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯 5 B5 _. [6 |* ^2 |' D
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網球拍線張力測試器ERT 300(開箱)5 Z- ?% g' W+ ?; Q }" w; P, g
ERT 300 Manual
1 C$ B: S& A: D3 G) w3 iThe right tension for every type of player
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6 }4 u$ s# y! q$ d; Y5 ]Dynamic Tension DT ( DT-value) / DT is the string bed stiffness
. U% l" K0 I0 \/ n6 cDT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)/ I# b6 C. W. w
DT determines the playing characteristics power and control.2 W9 M! W3 C$ L" ]; M1 F
Higher DT for more control / Lower DT for more power
" k! J" V! x R. o1 P `, _: ANot recommended to play tennis when DT below 28
' o# \0 _$ t L PRestring the racquet when the DT-value has decreased by 10% to 20%
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Lo DT 28-34 Defensive play / Club/ M' W, {% }# J
Mid DT 35-41 Dynamic,offensive play / Club,WTA6 c/ Y, b: z( g/ C/ {
Hi DT 42-46 Fast,aggressive play / Club , WTA , ATP
, f( Y* {+ t7 x% p- b. pHi+ DT 47-54 Very fast,extremely aggressive play / ATP4 W% B* F& s; _- l/ P- |# X
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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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; k d: w6 M. m$ ^/ }# M7 Q8 X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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