单词trench-mortar
na.: 迫击炮网络: 臼炮
Analysis of Kill Efficiency for Trench Mortar Ammunition Equipped with Proximity Fuse
迫弹配用近炸引信杀伤能力分析
The Study of Application of Ultrasonic Inspection In The Tube of trench mortar Inspection
超声波探伤在某型追击炮身管检测中的应用研究