valve rocker arm support

例句：

1. 1.The valve rocker is crucial for the proper functioning of the pump.
   阀门摇臂对于泵的正确运作至关重要。
2. 2. The valve rocker arm supports the piston in its movement.
   阀门摇臂支撑活塞的运动。
3. 3.The valve rocker arm is made of high-quality materials to ensure durability and reliability.
   阀门摇臂由高质量的材料制成，以确保耐用性和可靠性。