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Explosives and Explosive Ordnance Disposal
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人行道或梯子格
垂直或倾斜通道用于人穿行或通过梯子上坡的通道,其形式可以是小井或上升通道,目的是方便上坡。攀梯道也包括通风系统、水和压缩空气管道等
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