trench mortar的反义词
名词迫击炮
1. 迫击炮：cannon 加农炮; 大炮 | trench mortar 迫击炮 | anti-aircraft gun 高射炮
noun
1. trench mortar的解释
1. a muzzle-loading high-angle gun with a short barrel that fires shells at high elevations for a short range
Synonym: mortar howitzer