ahead cam
[机] 正车凸轮
ahead igniter cam
[机] 前进点火凸轮
ahead injection cam
[机] 进喷射凸轮
ahead of
在…之前
ahead of game
领先,超过,佔优势;提前,事先,太早
ahead of one's times
比所处时代先进
ahead of schedule
提前
ahead of the game
领先
ahead of time
提早
ahead power
[机] 正车动力
ahead turbine
[机] 前进汽轮机
