free-piston gas generator

例句：

1. 1. The free-piston gas generator is a critical component of the engine's operation.
   自由活塞式气体发生器是发动机运行的关键部件。
2. 2. The design of the free-piston gas generator has been optimized for efficiency and durability.
   自由活塞式气体发生器的设计已经优化，以提高效率和耐用性。
3. 3. The free-piston gas generator is responsible for generating the power that powers the car's engine.
   自由活塞式气体发生器负责产生汽车引擎所需的动力。