Waterproof performance: the whole sealing process design, waterproof.
防水性能：全密封性工艺设计，防水。
Two types of structure of corrugation tank in the whole sealing oil-immersed transformer are introduced. Their economic and social benefits are analyzed.
本文介绍了两种全密封油浸变压器波纹油箱的结构，并对它们的经济效益和社会效益进行分析。
Vacuum packer can complete the whole process of pumping air into vacuum state, sealing, lettering, cooling and exhaust in terms of the process, but just need to press the vacuum cover.
真空包装机只需按下真空盖即自动按程序完成抽真空、封口、印字、冷却、排气的全过程。
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