Warning: file_put_contents(/www/wwwroot/ppbbu/bieo.cn/cache/899f4f2d0752d881093f9f1609bbcacf.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/bieo.cn/index.php on line 58 spring-loaded plunger例句_spring-loaded plunger英汉例句_spring-loaded plunger双解例句_衣物護欧路词典
V-packings: Self-adjusting, spring-loaded, double V-packings maintain constant high pressure seal compression and extend seal and plunger life. 密封：自動調節，彈簧底座，雙層V-密封維持高壓密封和延長密封與柱塞壽命。