Warning: file_put_contents(/www/wwwroot/ppbbbu/n94.cn/cache/8f2ccfdd1a87655767385b1af1d6307c.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/n94.cn/index.php on line 55 overhead-valve engine英英字典_overhead-valve engine剑桥英语解释_overhead-valve engine柯林斯英文解释_94生活常识网有道词典
1. N a type of internal-combustion engine in which the inlet and exhaust valves are in the cylinder head above the pistons 顶置气门发动机 (US name valve-in-head engine)→compareside-valve engine