Spark plugs only ignite the fuel mixture near the spark gap, reducing the combustion efficiency, and the metal that makes them up is slowly eroded as they age.
火花塞只点燃火花隙附近的燃料混合物，这就降低了燃烧效率，并且随着使用年限增加火花塞中的金属慢慢被侵蚀。
Spark plugs only ignite the fuel mixture near the spark gap, reducing the combustion efficiency, and the metal that makes them up is slowly eroded as they age.
火花塞只点燃火花隙附近的燃料混合物，这就降低了燃烧效率，并且随着使用年限增加火花塞中的金属慢慢被侵蚀。
应用推荐