The technique of primary drilling and blasting is an effective way to solve the problem of crushing, caving and transportation.

该方法的初采钻爆技术是解决顶煤破碎与顺利放出的有效途径之一。

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The primary and secondary dry crushing and associated dry screening systems are designed and sized to operate 6000 hours per year or 68.5 percent of total time.

初级和次级破碎和配套的干筛系统的设计和规模确定，是依据每年运行6000小时或总时间的68.5%。

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John McCain's victory in the New Hampshire primary was crushing: he defeated George W. Bush, long deemed certain to gain the Republican nomination, by a wounding 18 percentage points.

ECONOMIST: The contender