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一种盲人看书看报识物引导器，所属电子制造技术领域。
A guide for blind men reading relates to the electrical production technology.
youdao
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所属技术领域为母猪产房中的设施。
The field belongs to the establishment in the sow delivery room.
youdao
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所属技术领域为母猪产房中的设施。
The field belongs to the establishment in the sow delivery room.
youdao