名词 controller:

1. someone who maintains and audits business accounts

2. a person who directs and restrains

3. a mechanism that controls the operation of a machine

controllern.控制者；管理者；审计官；控制器controller disk控制器磁盘controller data控制器数据Controller-ID控制识别controller gain调节器增益controller drum控制器滚筒Controller code编码controller care控制卡controller case控制器箱controller lock调节器锁定, 控制器锁定controller type控制器类型

1. The controllers counted down to blast-off.
   控制器倒读数至发射时间。
2. Unipolar controllers need center-tapped windings.
   单极控制器需要中心抽头绕组。