- UID
- 2162
- 閱讀權限
- 30
- 精華
- 0
- 威望
- 4
- 貢獻
- 493
- 活力
- 10
- 金幣
- 836
- 日誌
- 29
- 記錄
- 32
- 最後登入
- 2024-1-17
 
- 文章
- 385
- 在線時間
- 322 小時
|
本帖最後由 henrylin424 於 2011-6-30 13:54 編輯
! M2 j: h! b; b- V( A$ U" k% C
網球拍線張力測試器ERT 300(開箱)6 O+ w& g: G- e; t, x
ERT 300 Manual
1 l+ ~6 k2 i/ G4 c' {5 \$ X( RThe right tension for every type of player
/ B2 p( y2 A* K" I0 A; Q+ k1 u4 X; ]
Dynamic Tension DT ( DT-value) / DT is the string bed stiffness
* G' h9 Z& {2 X7 dDT is ball power in kilo pond required to depress the string bed 1 cm at the sweet spot(ball impact)
' o0 Y( X J$ ^* I* ^9 xDT determines the playing characteristics power and control.& K# X3 J+ ^; [4 }; ?
Higher DT for more control / Lower DT for more power
- [- g8 a. _' U6 X/ U' RNot recommended to play tennis when DT below 284 e% P% f7 Y& b d
Restring the racquet when the DT-value has decreased by 10% to 20%% N# }) C( [& \! C8 j
6 X0 T, N. L D n' lLo DT 28-34 Defensive play / Club/ a5 `" d+ Q; j7 F9 u1 H8 T
Mid DT 35-41 Dynamic,offensive play / Club,WTA
6 p& d' }/ {5 H) P2 P2 B7 q. nHi DT 42-46 Fast,aggressive play / Club , WTA , ATP
* l0 F& |( }% UHi+ DT 47-54 Very fast,extremely aggressive play / ATP+ ]) s5 \ {; e# {
2 B2 i( ]2 l! EWithin the first 2 to 4 hours after stringing, there is often a remarkable tension loss of 2 to 4 DT , called stabilization losses.1 K, W% U7 }8 X3 A: G* v
' x0 |% F9 v8 f: A) L3 L
在stringforum左方DT database 選擇你的球拍,即可查到相關線種掉磅chart.
& D6 A" H7 Y( w
2 B, x& z9 Y! Z& T6 ~ J; m3 n8 C) i |
|
發表於 2011-6-30 11:21:01
收藏
讚