Warning: file_put_contents(): Only 0 of 4959 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/4cd.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_沉淀汉英词典
1. N a type of internal-combustion engine in which the inlet and exhaust valves are in the cylinder head above the pistons 頂置氣門發動機 (US name valve-in-head engine)→compareside-valve engine