Ambush marketing-piggy-backing on a big sporting event by non-sponsors-has grown steadily since the practice burst out of bounds a decade ago.
埋伏式营销——即非赞助商借大型体育赛事推广自己的品牌——自10年前突破界限以来一直在稳步增长。
Based on the field practice, some regularities of rock burst in Nantong Mine District are discovered and the practical prevention and governing measure are summarized in this paper.
在现场实践基础上，揭示了南桐矿区岩爆发生的某些规律，研究总结了岩爆实用防治技术措施。
The rock burst in coalmines is always one of the difficult problems on rock mass mechanics and mine pressure, which is not solved in the theory and in practice.
煤矿冲击地压一直是岩体力学及矿山压力防治研究的难点之一，从理论到防治都尚未完全解决。
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