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Explosives and Explosive Ordnance Disposal
containing
透视 线
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无线电波透视法
根据岩石、煤等对电磁波的吸收能力不同,探测断层、无煤带、煤层变薄带、岩溶陷、落柱、老窑、岩溶等的物探方法
radio penetration method
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