priming grid

例句：

1. 1. The engineer used a priming grid to ensure the proper functioning of the engine.
   工程师使用预点火网格确保发动机的正确运行。
2. 2. The priming grid was designed to prevent the spread of fire during the construction process.
   预点火网格设计用于在施工过程中防止火势蔓延。
3. 3. The priming grid was crucial in maintaining the integrity of the pipeline system during maintenance.
   预点火网格在维护过程中对管道系统的完整性至关重要。