试验测试了不同几何参数下滤清器的滤清效率，计算与测试结果吻合良好。
By experimenting the filtering efficiency of air filter in different geometric parameters, the results tally well with that of calculations.
测试并计算了新型滤清器的压力降和原始滤清效率，并与原滤清器进行了对比。
The new filter's pressure descending and filtering efficiency were tested, and compared with the primitives.
通过严密的理论推导，得出了不同粉尘浓度条件下发动机的磨损与空气滤清器滤清效率的经验公式。
In this study, an empirical equation is derived which describes the relationship between engine wear and air cleaner efficiency under different dust con-centrations.
试验结果表明，新型滤器的压力降完全符合规定要求，原始滤清效率为63.04%，而传统滤器的原始滤清效率仅为60%。
The test results show that the pressure descend of new filter conform to the requirement of standard, the filtration efficiency is 63.04%, and the traditional filter is no less than 60%.
更重要的是，良好的过滤效率感受下车头与空气滤清器，允许优越的空气流动的有效性。
More importantly, good filtering efficiency is experienced under the bonnet with this air filter which allows for superior air flow effectiveness.
更重要的是，良好的过滤效率感受下车头与空气滤清器，允许优越的空气流动的有效性。
More importantly, good filtering efficiency is experienced under the bonnet with this air filter which allows for superior air flow effectiveness.
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