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Jabulani 球好与坏,看看数据
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http://en.wikipedia.org/wiki/Adidas_Jabulani
FIFA Approved standard[3] Jabulani measurements[3]
Circumference 68.5–69.5 cm 69.0 ± 0.2 cm
Diameter ≤ 1.5% difference ≤ 1.0% difference
Water absorption ≤ 10% weight increase ≤ 0% weight increase
Weight 420 - 445 g 440 ± 0.2 g
Rebound test ≤ 10 cm ≤ 6 cm
Loss of pressure ≤ 20% ≤ 10%
Reception
The name might come from the Zulu word for 'celebrate', but many observers hold it directly responsible for the notable lack of goal celebrations in the opening stages of the 2010 FIFA World Cup. Indeed, some have nicknamed it the 'Jumanji', after the Robin Williams film, on account of its capriciousness.[7]The ball has been a hot topic among high-profile players, receiving mostly harsh criticism. |
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