The experimental results indicated that particle sizes had an effect on separation efficiency of cyclone tube, and also made a difference to grade efficiency.

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；

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The effect of the inlet solid loading on the separation performance, especially on the grade efficiency, 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。

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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.

危险程度的专家评价系统能快速地跟踪和准确地预测小型露天采石场危险程度，提高安全评价的效率并及时提出合理的安全对策措施。

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Employing a tightknit band of road veterans, including three friends he has known since grade school, Mr. Chesney's touring staff works with a military efficiency that comes from wrapping a stadium tour every August and putting the next one on sale by December.

WSJ: Kenny Chesney: King of the Road