crankshaft gear meaning in English

曲轴齿轮
曲轴传动装置

But a camshaft driven directly by the crankshaft gear turns in the opposite direction
但是凸轮轴被曲轴齿轮直接驱动，其将在相反方向上转动。
The camshaft and crankshaft gears can be connected directly , or meshed . this type of operating linkage commonly is used on older six - cylinder , inline engines
凸轮轴和曲轴齿轮可能被直接连结，或者相啮合。这类操作联动通常被用在更老的六气缸，直列发动机上。