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foerfarande foer crushing of bergmassor by spraengverkan
foerfarande foer crushing of bergmassor by spraengverkan
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机译:斯普拉恩格坎(Spraengverkan)压碎贝格玛索的堡垒
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摘要
The method of breaking rock by blasting comprises drilling of boreholes, loading of a blasting charge with a means of initiation therein and stemming. The stemming is made up of a phlegmatized low-velocity explosive.
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