... 抽涂;gasket coating 平垫自紧密封;self-seal by flat gasket 平垫强制密封;forced seal by flat gasket ...
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平垫自紧密封
Flat pad self-sealing
以上为机器翻译结果，长、整句建议使用 人工翻译 。
综观国内外各类文献资料，很难查到平垫自紧密封结构应用于换热器管板密封的工程实例。
It is difficult to find out an engineering example that plain cushion self-tight seal applied to tubesheet seal in domestic and overseas references.
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