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本帖最後由 henrylin424 於 2011-6-30 13:54 編輯
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; i3 m" w/ h( c& N8 Q& X網球拍線張力測試器ERT 300(開箱)1 z/ A" l* c& F2 L
ERT 300 Manual
. ~; {1 h- E: e5 r4 d+ tThe right tension for every type of player' e' H+ j' X! s- F4 R0 ]
9 y$ z* O8 c6 s7 _! |5 l0 YDynamic Tension DT ( DT-value) / DT is the string bed stiffness
! ]" n9 {" C4 i9 ?( N5 }- Y' ^DT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact) T- l4 _3 N& @5 g F
DT determines the playing characteristics power and control.6 ^6 v- I2 W* k2 R$ D" j) e3 g I
Higher DT for more control / Lower DT for more power
( r5 E0 D7 D$ M& K" W" ANot recommended to play tennis when DT below 28# X0 {1 P; G' \8 p0 |/ D
Restring the racquet when the DT-value has decreased by 10% to 20%
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( L( B4 l5 U' S- K# RLo DT 28-34 Defensive play / Club# E7 |# g; w3 `
Mid DT 35-41 Dynamic,offensive play / Club,WTA# ^' [( t- ~7 [5 [$ Z+ \3 k# j
Hi DT 42-46 Fast,aggressive play / Club , WTA , ATP
# X7 ~" |" F; ZHi+ DT 47-54 Very fast,extremely aggressive play / ATP
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9 j5 G7 O9 Y' }- V% ^& R& rWithin the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.: b9 Q" e$ Y3 j& {$ y, Z$ Z Z8 t
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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.7 E; c1 r5 X I& ]) \/ b' X
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發表於 2011-6-30 11:21:01
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