Air column
空气柱───Air column
The paper also sets up a new concept of bottom air column effect and discusses the action mechanism of bottom air column effect.───文中提出了底部空气柱效应新概念，探讨了底部空气柱效应的作用机理。
With the index of cut hole's volume, depth and blasting fragmentation in the thesis, the simulated tests have been carried out upon cut blasting of bottom air column and conventional charge.───以槽腔体积、槽腔深度和爆破块度为指标，对底部空气柱装药和常规装药掏槽爆破进行了模拟试验。
important motivated mechanism which caused the heavy rain in Fuyuan and Malong is the coupling of stronger ascending motion and profound saturation air column.───强降水发生时有强的上升运动与深厚饱和气柱互耦结构是富源、马龙大暴雨产生的重要动力机制。
A device in a brass wind instrument that permits change in pitch by a rapid varying of the air column in a tube .───活瓣在铜管乐器中通过在管中迅速改变气流而完成音调的改变的一种装置。
The results show that there exist the considerably regional, seasonal, yearly and interdecadal changes of the air column PW over the QXPS.───结果表明，高原及周围地区的气柱可降水量有明显的地区及季节变化。
Effects of frozen soil smooth blasting may be enhanced by using decoupling and air column of charge.───验证了不偶合装药和空气柱装药结构能改善光面爆破效果。