sealing cover

基本解释

A plastic sealing layer is arranged at the inner part of the sealing cover sheet.
在封口盖片的内部设有塑胶密封层。
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Need to check the oil box's bottom which outlet whether closed or not, after closed surely then open the top of oil box and add the sealing cover for the top orifice.
检查油箱底部放油口是否已关闭，确定关闭后再打开油箱顶部加油口密封盖。
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The paper discusses that the electrolytic corrosion caused by binding cast iron with sulfur adhesive in the open air can be prevented by balancing electrode potential and sealing cover.
分析了硫磺胶在露天粘接铸铁引起的电化学腐蚀，提出了在金属粘接中应用平衡电位和罩面密封以防止电化学腐蚀。