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- In millisecond blast engineering,the key to achieving initiative control of vibration damages by means of wave interference is to ascertain reasonable delay time interval. 在微差爆破工程中,用干扰降震法实现爆破震动灾害主动控制的关键在于确定合理的微差延期时间。
- Based on the character of short-time non-stationary random signal, the feature of energy distribution of multi-interval-time in millisecond blast signals was investigated by means of the wavelet packet method. 摘要根据爆破振动信号具有短时非平稳的特点，利用小波包分析技术对满足分析要求的多段微差爆破振动信号的能量分布特征进行研究。
- By use of deep-hole millisecond blasting technique, four larg e-volume bridge piers under complicated circumstances were successfully demolished. 用深孔微差爆破技术成功地拆除了复杂环境下的四个大体积桥墩。
- Keywords millisecond blast;coal recovery rate;roof management; 毫秒爆破;煤炭回收率;顶板管理;
- The millisecond blasting method with long-delay out-of-hole and short-delay in-hole detonators and one-through initiation was ado pted in blasting design. 设计采用孔内高段延期雷管、孔外低段延期雷管一次引爆的微差爆破。
- Successful application of the deep-hole millisecond blasting with double-bench smooth blasting is a development to deep-hole blasting technologies for open pits. 双台阶光爆的深孔微差爆破的成功应用，是露天深孔爆破技术的一项发展。
- The natural conditions and order of the millisecond blasting are introduced.The arrangement ways of the millisecond pipes are expounded.It has made good result in practice. 介绍了炮采工作面毫秒爆破的自然条件和起爆顺序,详细阐述了毫秒管的布置方式,在实践中收到了良好的效果。
- According to lab model experiment and theory analysis,the rational delay intervalof millisecond blasting used in rock drift excavating was acquired and a new type of long millise-cond delay detonator was researched and manufactured. 根据实验室模型试验和理论分析得出岩石巷道掘进微差爆破合理延迟间隔时间，据此研制出新型长延迟毫秒雷管。
- The accordion was in full blast in the hall. 在大厅里手风琴拉得非常响亮。
- To increase lump coal ratio in stopes, a scheme is put forward for coal falling by loose pre-shearing millisecond blasting, and hole arrangement parameters and blasting parameters are adjusted. 为提高炮采面块煤率,提出了松动预裂微差爆破的落煤方案,并对布孔参数和爆破参数进行了调整。
- The party was going on in full blast. 聚会进行得热闹非凡。
- My brother plays his records full blast in his bedroom every night. 我弟弟每天晚上在他的卧室里大声放录音机。
- A blast of the trumpet gave her a start. 突然发出的喇叭声吓了她一跳。
- A trumpeter sent out a warning blast. 号兵吹出告警的号声。
- Discussing into Millisecond Blasting 微差爆破浅析
- The bomb blast killed several harmless passers-by. 炸弹爆炸使几个无辜行人受伤。
- row between millisecond blasting 排间微差爆破
- A blast of cold air hit him as he opened the window. 他打开窗，一股寒冷的空气直向他扑来。
- A blast in his ear galvanized him into full consciousness. 耳边一声轰响使他完全清醒过来。
- An orchestra play at full blast is a tremendous sound. 管弦乐队全力演奏声音大得惊人。
