But when Petri-net is used in the modeling and analysis of large scale power system, the problem of combination explosion may be encountered, therefore its application range of Petri-net is restricted. 但在利用Petri网对大系统建模和分析时会遇到组合爆炸问题,从而限制了它的应用范围。
After taking out inspection, theoretic discussion, and the object explosion texts under practical condition, the conclusion has been drawn that when the pressure and size is in the range of test boilers, aluminium boiler can meet the requests for safety. 通过对铝制锅炉实际使用情况的考察、理论探讨和实物热态爆破试验研究,得出铝制微压小型锅炉在一定条件下可满足安全性能要求的结论。
Finally, the effect of wind velocity, leakage rate and atmospheric condition acted on the total diffusion length and diffusion length in explosion concentration range has been discussed. 分析了风速、泄放速率和大气条件对LNG扩散距离和爆炸上下限浓度扩散范围的影响。
Although the steam-gas torpedo has high speed and strong explosion, it has shorter range which limits its tactical utilization. 蒸汽瓦斯鱼雷速度快,威力猛,但航程较短,战术应用局限较大。
Firstly, the speed-time frequency curve of the nuclear explosion wave in the protective range of the tangential gallery is made, which based on the summary of mechanical effects and test data from previous occasions of underground nuclear tests. 本文首先在总结历次地下核试验力学效应测试数据的基础上得出地下核爆炸波在切向坑道防护区段处的速度时程分布曲线。
The utilization direction of coalbed methane and the existing technical difficulties are introduced, the influencing factors of explosion limit in transmission of coalbed methane are analyzed, and the measures for reducing the explosion limit range are put forward. 论述了煤层气利用的方向和存在的技术难点,分析了煤层气输送中爆炸极限的影响因素,提出了缩小爆炸极限范围的措施。
For a great state-space search, strategy is to solve combination explosion, then evaluation function is established to start heuristic search, simulation results show it can reduce the search range greatly and save search time. 对大空间问题,搜索策略是要解决组合爆炸的问题,建立评价函数进行启发式搜索,仿真表明该方法大大缩小了搜索范围,节省了搜索时间。
Calculation of Echo Time of Explosion of Projectile or Warhead is Air and Its Application in Range Test of Fuze Self-destruction Time 弹丸战斗部空爆回声传播时间计算及其在引信自毁时间靶场测试中的应用
In the process of weapon research, explosion, combustion, and armor pierce, the flying attitude of the projectile in external ballistic needed to be measured by mean of the high-speed photography. It has become an indispensable means in the field of weapon range test. 在兵器研究过程中,爆炸、燃烧、穿甲、外弹道飞行姿态等的研究都离不开高速摄影,它已成为兵器靶场测试领域不可缺少的重要手段。
The simulation results indicate that, maximum overpressure of gas explosion shock wave can be attenuated to the range safe to personnel and mine facilities in the explosion barrier, thus protecting the personnel and mine facilities to the maximum extent. 模拟结果表明瓦斯爆炸冲击波的超压可以在泡沫陶瓷隔爆棚区衰减为对人员和井下设施的安全范围,不能继续向前在巷道中传播。
First, based on the relevant knowledge of explosion dynamics, Aerodynamics and soil mechanics, explosive model of weak rock is established. In addition, surrounding rock damage range is derived theoretically. 首先运用爆炸动力学、空气动力学、土力学等理论,建立软岩爆破模型,从理论上推导了岩石爆破损伤范围、相邻炮孔之间的爆生裂缝长度计算公式。