valve timing mechanism

• 配气机构

valve timing mechanism的用法和样例：

例句

1. That is, when the engine runs under a high speed, it can still work steadily and dependably, which demand that the valve train system should have a high performance.
   配气凸轮型线是配气机构的核心部分，配气凸轮型线设计是配气机构优化设计的重要途径之一。