etd
英[]
美[]
基本释义
- abbr.
- estimated time of departure 估计出发时间，预定离开时间; extension trunk dialing 分机中继拨号
英英释义
Noun
1. a system for screening luggage in airports; an agent passes a swab around or inside luggage and then runs the swab through a machine that can detect trace amounts of explosives