炮弹底火 meaning in English
cannon primer
Examples
- The research on prolong life for primer and propelling charge of breech projectile
后装炮弹底火与发射装药延寿方法探讨 - Analyzed 8 kinds of regulated plugs . calculating and analyzing results showed : ( 1 ) the most sensitive parts of all the plugs were near the bottom of axes of the notch , which was easily into auxiliary when under high pressure and caused unbalance or break of plugs . ( 2 ) comparison of 8 kinds of plugs proved that the design of plug of primer 9 second was optimization because it was in plastic under increase and decrease in pressure
对国内8种制式闭气塞：底- 9乙式底火闭气塞、海130底火闭气塞、海76炮弹底火闭气塞、底- 5底火闭气塞、底- 4底火闭气塞、底- 8底火闭气塞、底- 25底火闭气塞及底- 125底火闭气塞分别进行了有限元数值分析，计算结果表明： ( 1 )闭气塞凹槽底部靠轴心处为其机械强度最为敏感区域，在承受高压过程中易破裂。