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Explosives and Explosive Ordnance Disposal
containing
primary blasting
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Blasting is a primary means of extracting minerals and ores at surface mining operations
爆破是露天采矿作业采掘矿物和矿石的一种主要手段
primary blasting
一次爆破
为持续生产而施行的主要爆破,目的是利于后续的运输和破碎。它是与二次爆破相对而言的
primary blasting
主爆破
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