sealing cover

基本解釋

A plastic sealing layer is arranged at the inner part of the sealing cover sheet.
在封口蓋片的內部設有塑膠密封層。
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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.
檢查油箱底部放油口是否已關閉，確定關閉后再打開油箱頂部加油口密封蓋。
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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.
分析了硫磺膠在露天粘接鑄鐵引起的電化學腐蝕，提出了在金屬粘接中應用平衡電位和罩面密封以防止電化學腐蝕。