集气罩
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gas collecting hood 集气罩
So, reforming the smoke capture system and developing a high efficiency gas-collecting hood technology suitable to large-scale aluminum reduction cell become more and more particularly urgent.
因此，对现有集气系统进行改造，并研究开发一种适合大型铝电解槽的高效集气排烟技术就显得尤为迫切。
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