Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/3679ebe1b38cfc181f238943b43f5bc1.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/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_沉淀汉英词典
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）设置在靠近活塞上死点的活塞环所在的部位。 ip.com