masterkeyn.万能钥匙mastern.主人；硕士；专家vt.控制；精通adj.主要的；主人的；精通的master keying system主键控制系统Master Tracking Data主要跟踪数据master level control主电平控制master lever tatchet主操纵杆棘齿板master work schedule周期作业时间表master/slave mode主从模式master's requisitionmaster of one's fate能掌握自己命运的人...Master Question File主要问题档案master console usage主控制台使用

1. By attaching the connecting rods to a master disk surrounding the crankpin, as many as twelve cylinders have been made to work on a single crankpin.
   通过把连杆连接到包住曲柄销的一个主盘上，十二个气缸便可在同一个曲柄销上工作。