graphite packing

例句：

1. 1. The graphite packing in the machine is vital for its operation.
   机器中的石墨填料对于其运行至关重要。
2. 2.The graphite packing was designed to reduce friction between moving parts.
   石墨填料被设计来减少移动部件之间的摩擦。
3. 3. The graphite packing was used to fill the gaps in the engine's cylinder walls.
   石墨填料用于填充发动机气缸壁的间隙。