of a firearm; not having rifling or internal spiral grooves inside the barrel
双语例句
1. A shoulder-held weapon consisting of a long metal smoothbore tube for firing armor-piercing rockets at short range.
火箭筒一种肩扛武器，由一个金属的光滑长炮管组成，用于在近距离发射。
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2. With an unmanned turret, it has a full combat weight of 65 tons and is fitted with the 125mm smoothbore gun that is able to fire basically all of Russia's current cannons and ammunitions.
3. With an unmanned turret, it has a full combat weight of 65 tons and is fitted with the 125mm smoothbore gun that is able to fire basically all of Russia's current cannons and ammunitions.
