also pay-load, 1917, from pay + load (n.). Originally the part of a truck's (later an aircraft's) load from which revenue is derived (passengers, cargo, mail); figurative sense of "bombs, etc. carried by a plane or missile" is from 1936.
权威例句
1. The space shuttle undertook a topsecret mission with a military payload under Pentagon control.
航天飞机执行一项绝密使命,使军用酬载由五角大楼控制.
2. The payload of a ballistic missile is its warhead.
一枚弹道导弹的有效载荷是它的弹头.
3. The space rocket carries a satellite as a payload.
宇宙火箭运载一个卫星作为其有效载荷.
4. The warhead is the missile's payload, or cargo.
战斗部是导弹的有效载荷, 即运载物.
5. The chief exception was lengthened second - stage propellant tanks to increase the payload by 300 kilograms.