The experimental results indicated that particle sizes had an effect on separation efficiency of cyclone tube, and also made a difference to gradeefficiency.
实验结果表明：入口颗粒的粒度分布不但对旋风管的分离总效率有影响，而且对粒级效率也有较大影响；
2
The effect of the inlet solid loading on the separation performance, especially on the gradeefficiency, of the PV type cyclone separator is experimentally studied.
用试验方法研究了入口含尘浓度对PV型旋风分离器性能的影响规律。
3
Expert evaluating system can rapidly track and correctly forecast hazard grade at small open stone quarries, improve the efficiency of safety evaluation and raise reasonable safety countermeasures.