Using these inputs, the ECU is programmed to switch from the low lift to the high lift cam lobes when the conditions mean that engine output will be improved.

应用这些参数值，ECU在引擎动力输出需要被提高的条件成熟时候，程序自动从低升程的凸轮切换到高升程的凸轮。

youdao

The first was a '70 Monte Carlo, whose 350 engine Nick had beefed up with a high-lift roller cam and racing pistons.

最开始是一辆七十年代的蒙特卡洛轿车。 尼克用高扬程滚子凸轮和赛车级活塞把它的350发动机做了改装。

youdao