noun 下载 🔗分享 凸轮轴 A shaft fitted with cams; especially one in a piston engine that activates the valves. Examples : "The mechanic replaced the camshaft in my car's engine, which now allows the valves to open and close smoothly. " 机械师更换了我汽车发动机里的凸轮轴，现在气门可以顺畅地打开和关闭了。 machine part vehicle technical industry 与AI对话词汇游戏阅读练习
