一攻与防反历来是排球比赛中的两大战术系统。一攻是指在接起对方发球后所组织的第一次进攻 ;防反是指后排防起对方攻过来的各种球所组成的反击和在网上直接拦击对方的各种进攻 ,即一攻以外的任何一次进攻。在发球得分制规则下 ,一攻是直接为了夺取发球权 ,不给对方得分的机会 An attack and anti-anti-volleyball has always been the two major tactical systems. A attack refers to the pickup after the other party organized by the first attack; anti-anti refers to the rear defense from the other side of the ball attack formed by the counterattack and the other on the Internet directly attack each other’s attack, that is, Attack any attack outside. In the service rules, a direct attack is to seize the right to serve, do not give each other a chance to score