【简答题】翻译下面一段文字 Overhead camshafts: The camshaft(or camshafts, depending on the design employed) is located above the valves within the cylinder head, and operates either indirectly or directly on the valves...
【简答题】翻译下面一段文字: Cam-in-block: The camshaft is located within the engine block, and operate directly on the vavles , or indirectly via pushrods and rocker arms. Because they often require pushrods they are o...