1. 侵略者：道格拉斯A-1空中袭击者(Skyraider)北美航空A-2野蛮(Savage)道格拉斯A-3空中勇士(Skywarrior)麦克唐纳.道格拉斯A-4天鹰(Skyhawk)北美航空A-5治安员(Vigilante)格鲁曼A-6入侵者(Intruder)道格拉斯A-26侵略者(Invader)塞斯纳A-37蜻蜓

2. 侵入物：nonlinear vibration 非线性振动 | invader 侵入物 | phase-locking 锁相

1. 入侵者;侵略者
Invaders are soldiers who are invading a country.

e.g. The invaders were only finally crushed when troops overcame them at Glenshiel in June
1719.
1719 年 6 月，部队在格兰舍一役击败了入侵者，直至此时他们才最终覆灭。

2. 侵略国;侵略军
You can refer to a country or army that has invaded or is about to invade another country as an invader .

e.g. ...action against a foreign invader.
抵抗外国侵略军的战斗

noun

1. someone who enters by force in order to conquer

Synonym: encroacher