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The alarm which comprises a special logic circuit is arranged in a duty room.
报警器装在值班室内，它含有专用逻辑电路。
youdao
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The invention discloses a traffic guidance glove which comprises a glove body.
本发明公开了一种交通指挥手套。
youdao
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The invention discloses a traffic guidance glove which comprises a glove body.
本发明公开了一种交通指挥手套。
youdao