Most of studies overlooked sleeve type ejectiongun and the effect of pressure area changes, simultaneously the models of ejectiongun were lack of extensity.
以往研究中对多级弹射筒和压力有效作用面的影响重视不足，并且所建模型通用性差。
2
The practice showed that this solution can effectively solve the lax close problem of ejection slot cover in this type of naval gun.
实践证明，该方案有效地解决了该型舰炮的退壳槽盖关闭不严的问题。
3
A mini-sized sand-blasting gun of ejection-and absorption type, used to clean and roughen the metallic surfaces for thermal spraying.