Automatic rail自动栏杆automaticadj.自动的；无意识的；必然的n.自动装置；半自动武器Automatic Flight Direction System自动飞行方向控制系统automatic time difference circuit自动时差电路automatic cutting chaff dispenser自动切割箔条投放器automatic testing instrumentation自动测试仪automatic bacteria colony counter自动菌群计数器Automatic Signal Recognition Unit自动信号识别器automatic telephone trunk network长途自动电话网automatic train control apparatus列车自动控制设备Automatic mechanic parking garage自动化机械停车库automatic light-density control自动光强控制