空气柱

光面爆破装药结构空气柱长度理论计算

Theoretical calculation of air column length of charge structure for smooth blasting

底部空气柱装药掏槽爆破试验及机理研究

Research on cut blasting experiment of bottom air column charge and its mechanism

作者首次采用了mixture模型对空气柱进行了模拟，模拟效果良好。对液流而言，切向的数量级最大，轴向速度次之，径向速度最小。

Author chooses the " mixture " moder to simulate the air core and the effect of simulation is good .

计算表明，对于空气柱等边三角形二维光子晶体，当介电常数比为13：1时，最佳填充比为0.78，最大带宽是0.094（Δωa/2πc）；

The results of calculation show that the optimal filling factor is 0.78 for equilateral triangular two-dimension photonic crystal when dielectric constant ratio is 13:1 , and the widest band gap is 0.094 (Δω a / 2 π c ) .

南露天煤矿空气柱装药法爆破的应用

Application of blasting method with broken charge in south open pit

空气柱振动时也能产生驻波。

Stationary waves are also produced in vibrating columns of air .

水力旋流器内空气柱的形成规律初探

Study on the Principle of Air Core Forming in Hydrocyclone

考虑空气柱的水力旋流器内流场的数值模拟

Numerical simulation for flow field with air core in Hydrocyclone

底部空气柱爆破技术在海南铁矿的应用

Application of bottom air-column blast in Hainan Iron Mine

旋流器内空气柱形成与发展及其对分离的影响

Generation and Development of Air-core in Hydrocyclone and its Effect on Separation Performance

水力旋流器内空气柱直径的研究

Study on Diameter of Air Core in Hydrocyclones

重介质旋流器内空气柱与能耗关系的研究

Research on the Relationship between Air Core and Energy Consumption in Dense Medium Cyclone

矩形波导填充带有空气柱介质不连续性的边界元法分析

Boundary Element Method Analysis of Discontinuities in a Dielectric Filled Rectangular Waveguide with Air Posts

形成空气柱的最小压降，随着溢流口直径及锥角的增大而增大，随着进料口直径的增大而减小。

With increase of overflow diameter and cone angle , the minimum pressure drop of hydrocyclone increases .

研究结果表明，采用中心固体棒取消旋流器内的空气柱后，旋流器的分离性能得到了有效的强化。

By eliminating the air core with solid core , the hydrocyclone separation performance was improved effectively .

空气柱是固-液型旋流器流场中的一种特有现象，它对旋流器的分离性能有重要影响。

Air-core , as one of characteristics of flow field , has remarkable influence on separation performance of hydrocyclone .

试验结果表明，底部空气柱装药掏槽爆破效果优于常规装药效果。

Experimental results show that the cut blasting effect of bottom charge is better than that of conventional charge .

实验研究了该中心固棒替代空气柱对旋流器性能指标的系统影响。

Comprehensive effects of eliminating the air core by the solid core on the hydrocyclone performance indices were experimentally investigated .

风暴在地表上移动时或多或少形成的一个旋转垂直的空气柱。

A more or less vertical column of air whirling around itself as it moves over the surface of the Earth .

黄铜的管乐器中改变空气柱的长度来变化音调的装置。

Device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone .

在飓风的中心，是一股空气柱，直径只有几英里，旋转得非常缓慢。

At the center of the hurricane is a column of air only a few miles in diameter that spins very slowly .

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。

The paper also sets up a new concept of bottom air column effect and discusses the action mechanism of bottom air column effect .

旋流器内湍动能较大的区域是溢流管端以下空气柱附近的内旋流区域；

There is larger turbulent kinetic energy in the internal swirl area near the air column under the end of the overflow tube in the hydrocyclone ;

例句与用法：海龙卷水上生成的飓风或稍弱之旋风，形成漏斗状旋转的空气柱和水柱龙卷风袭击该镇，留下破坏的痕迹。

A tornado or lesser whirlwind occurring over water and resulting in a funnel-shaped whirling column of air and spray . The tornado cut a swath through the town .

并明确了选取硬度大、耐腐蚀的材料以及减少旋流器内空气柱的产生等相关理论，对旋流器在工业领域的安全应用有一定的参考价值。

Such as the selections of corrosion resistance , hardness and reduction of air core , the results have a certain reference value for the hydrocyclone in industrial applications .

其内部由于中心负压而形成空气柱，当流场稳定后，该空气柱从底流口到溢流口贯穿始终。

Air core comes into being because of central minus pressure and goes through the hydrocyclone from the overflow gate to the bottom outlet after the flow field become steady .

应用激波理论分析了底部空气柱装药爆破机理。

He blasting mechanism of bottom air column charge is analysed with shock wave theory and its blasting effect is investigated through a series of crater tests on the cement mortar models .

旋流器内的切向速度从内向外逐渐升高，在空气柱附近达到最大值，然后逐步下降到最低点。

The tangential velocity in the cyclone improves gradually from inside to outside and reaches the maximum close to the air column and then reduces step by step until to the minimum .

因此，为减少空气柱对旋流器分离效率的影响，旋流器应采用合适的锥角及与之相匹配的最佳进口流量。

Hence , to reduce the effect of the air cone on the classifying of the hydrocyclone , parameters of suitable cone angles and related optimal in-let flows should be selected for the hydrocyclone .

探讨了不同排料方式下的水力旋流器空气柱形成的机理，定量分析了旋流器的结构参数对形成空气柱最小压降的影响。

Study on the mechanism of air core forming of different discharge of hydrocyclone , and the influence of geometric parameter on the minimum pressure drop of forming air core has been discussed quantitatively .