positiver sealing meaning in Chinese

可靠密封；刚性密封

Import positive seal compressor which provides and efficiency and strong ability of freezing
采用进口全封闭压缩机，效率高。冷冻能力强。
Registered machine fits and positive sealing o - ring seals at all joints ; easy replacement
在所有连接点均配置拥有专利保护的机械式适合的、积极的o型密封垫圈，更换简便易行。
In the nibco design stop - checks , you will note that the disc is mounted to permit the disc to settle into the seat area for positive sealing in case there is any misalignment due to assembly or uneven heat expansion
从美国尼伯科的截止止回阀结构设计中，人们可能会注意到，万一出现由于组装问题或不稳定的热膨胀导致的中心线错位，所安装的阀瓣能够适应阀座区域的要求主动调整密封。