基本解释[军事学]延迟反冲词组短语短语Lever Delayed Blowback 杠杆延迟后喷式Gas Delayed Blowback 气体延迟后喷式Mechanical Delayed Blowback 机械延迟后喷式roller -delayed blowback 滚轮延迟反冲式Roller Delayed Blowback 滚轮延迟后喷式专业释义军事学延迟反冲