Modular Building Systems Association模块化建筑系统协会 Minority Business Students Association少数民族学生协会 Multicultural Business Student Association多元文化的商业学生会 Muslim Business Student Association穆斯林商业学生会 Master of Business Student Association掌握商务学生会 Manual Business Systems Association手动业务系统协会 Microsoft Baseline Security Analyzer微软基线安全分析仪 Medical Board of South Australia南澳大利亚医学委员会 methylated bovine serum albumin甲基化牛血清白蛋白 Massachusetts Bay Sailing Association马萨诸塞湾帆船协会 Munitions Board Standards Agency董事会标准局军需品 Michigan Bean Shippers Association密西根州豆托运人协会 Main Bus Switching Assembly主要的公共汽车开关总成 Meal Break Standby Allowance (obsolete)餐打破备用的补贴(过时的) Mokena Baseball Softball Association (Illinois)Mokena棒球垒球协会(伊利诺斯州)