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The technique and advantages of the decompress duct with polyfunction of ventilation and fumigation were introduced.

详细介绍了通风、熏蒸、多功能减压管的出入粮工艺及使用中的优点。

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The necessity of installing decompress duct with polyfunction and ventilation. seal. fumigation and inspection equipment was stressed.

强调了作为储备仓的筒库，安装多功能减压管和配备通风、密闭、熏蒸、检测等设施的必要性。