self priming device

例句：

1. 1. The self-priming device ensures that the pump will start immediately after being turned on.
   自激振荡器确保泵在开启后立即启动。
2. 2.The self-priming device is a crucial component of the oil filter system in modern cars.
   自激振荡装置是现代汽车油滤系统中的关键部件。
3. 3.The self-priming device has been found to improve the efficiency of the engine by reducing the amount of fuel required.
   自激振荡装置被发现可以提高发动机效率，通过减少所需的燃料量。