... seal by metallic oval-ring ==> 金属椭圆环密封 seal by plug ==> 堵塞密封 seal by precision fit ==> 研合密封 ...
双语例句
1
The vitrification rate caused by cotton plug wrapped in cheese cloth was the lowest among all seal materials, including polyethylene film, plastic cover and sulfuric paper.
封口材料中聚乙烯膜和塑料瓶盖两个处理玻璃化率相似且玻璃化率高，硫酸纸次之，棉塞的最低。
2
Just a few spare parts shall be replaced by the user. In addition, the machine shall also seal aluminum security plug, three screw cap and crown cap.