automatic grenade launcher

常见例句

The XM29 was intended to be a shoulder-fired, semi-automatic grenade launcher in 20 mm calibre and to incorporate a compact, lightweight 5.56 mm rifle as a back-up weapon.
XM29确定为一种抵肩射击，20毫米口径单发自动榴弹发射器并结合一个紧凑型，重量轻的5.56毫米步木仓做为后备武器。
afsbbs.com
Maintaining his situational awareness, Staff Sgt. Miller immediately jumped into his vehicle's turret and engaged the enemy with its mounted MK19 40mm automatic grenade launcher.
意识到处境不妙，米勒上士立即跳进他的汗马车炮塔里，抓起MK19式40毫米自动榴弹发射器，向游击队展开猛烈轰击。

On other convoys along those same roads, Marissa's husband, Specialist Charlie Bootes, manned a Mark-19 fully automatic grenade launcher.
NPR: Waiting and Dreading: Families in War Time