piston filling machine

例句：

1. 1. This piston filling machine is used to fill the cylinder with gas.
   这台活塞填充机用于将气体填充到气缸中。
2. 2. The piston filling machine was developed to improve the efficiency of the manufacturing process.
   活塞填充机的开发是为了提高制造过程的效率。
3. 3. The piston filling machine has become a popular choice for many factories due to its high reliability and lowmaintenance costs.
   由于其高可靠性和低维护成本，活塞填充机已成为许多工厂的热门选择。