And under the thread of "the Second-Launch Theory", this paper briefly introduces the structure design of three kinds of bullets such as the shotshell grenade and the shell.
在二次发射的原理设计思路下，本文介绍了霰弹、榴弹以及脱壳动能弹这三种新型弹的简要结构设计特点。
参考来源 - 特种机械系统的动力学仿真与优化设计·2,447,543篇论文数据，部分数据来源于NoteExpress
In February 2007, the second beta machine was deployed to launch countries.
在2007年2月，该项目向启动国家部署了第二个测试机器。
The second launch was guided by a laser designator in a second helicopter flying near the launch platform.
第二枚火箭由在发射平台附近飞行的直升机提供激光指示。
Qi began to launch the second round of attacks. They beat the drums again.
齐国开始发动第二轮进攻，他们重新擂起战鼓。
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