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ASE difference in how tennis balls? What is ASE ball?

Nangong new2010-03-10 23:11:28 +0000 #1

Orange Russia2010-03-10 23:17:46 +0000 #2
1 tennis, ACE is a ball game one of the parties serve, the ball falls on the effective area, but the other party did not touch the ball in making it serve the direct scores. If the person touched the ball, out of sector or the net, only known as ace, rather than ACE ball. In short, as long as the opponent hit the ball, are not ACE.

2 is the ACE ball, ACE criteria to judge the ball is the other side has not received the ball. Therefore, ACE can send the ball, not just look at the level of driving side, but also with the very relationship between the level of the ball side. For example, you find a stupid X stand opposite each of the ball you are ACE.

3 rest time is 90 seconds
No culture is wonderful, terrible?2010-03-10 23:37:01 +0000 #3
Tennis, ACE is a ball game one of the parties serve, the ball falls on the effective area, but the other party did not touch the ball in making it serve the direct scores. If the person touched the ball, out of sector or the net, only known as ace, rather than ACE ball.

baike.baidu.com/view/175719.html?wtp=tt

Simply put, that is, made in the effective region, but also serve the other party did not run into the ball directly to score the ball is the ball of ACE that is serving score directly come into contact with each other and do not come into contact with the re-scoring is not ACE ball

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