发射学

例句：

1. 1. The physicist developed a theory of electromagnetic waves.
   物理学家发展了电磁波的理论。
2. 2. The engineer designed an innovative system for launching satellites.
   工程师设计了一个用于发射卫星的创新系统。
3. 3. The scientist conducted experiments to test the effectiveness of the new launch technology.
   科学家进行了实验，以测试新发射技术的有效性。