Warning: file_put_contents(): Only 0 of 6356 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/69228.com/index.php on line 55 ball plunger是什么意思，ball plunger的翻译，ball plunger音标、读音、用法和例句_魏碑心思朗文词典
Moreover, the ball plungers (6) are positioned near the piston top dead center, at which the piston ring is positioned. 另外，球塞（6）設置在靠近活塞上死點的活塞環所在的部位。 ip.com