fuel injection pump driving spindle

例句：

1. 1.The fuel injection pump is responsible for distributing the fuel throughout the engine.
   燃油喷射泵负责在整个发动机中分配燃料。
2. 2.The driving spindle is used to rotate the pistons in the cylinder.
   驱动主轴用于旋转气缸中的活塞。
3. 3. The fuel injection pump and driving spindle are essential components of the engine.
   燃油喷射泵和驱动主轴是发动机的必备组件。