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Encyclopedia
工学
〔水电站金属结构〕
释
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启闭机
水工建筑物中,专门用以操作闸门及拦污栅,达到启闭目的的起重机械设备。
工学
〔升降机〕
释
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启闭机
通过升降或开闭闸门的动作来实现金属闸门开启与关闭的专用设备。
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bamboo flute with three tunes
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bamboo forest
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bamboo hat of Maonan nationality
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bamboo in wind
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