abbr. 多元自控系统（Multiproject Automated Control System）；中高度通信卫星（Medium Alitiude Communication Satellite）
参考例句
1. This clause specifies the extension of the MAC Control mechanism to manipulate multiple underlying MACs simultaneously. 本附录定义了MAC控制机制的扩展功能以支持同时操作多个下层MAC。
2. Elite household guards, well armoured and equipped with macs, Qapukulu make for tough opponents in hand to hand combat. 宫廷卫队乃土耳其骑兵精锐，盔甲精良，装备狼牙棒，擅长与强悍敌军厮杀恶战。
3. While Gamorreans have been introduced to modern blaster and weapon technology, they prefer to hack and slash with axes, swords and macs. 尽管加莫人引进了现代化的爆能枪和武器技术，他们仍然偏好用斧、剑或狼牙棒劈砍。
