1·Then the resistance loss characteristics is analyzed for the different configurations of water silencers.
随后对不同结构水消声器的阻力损失特性进行了分析。
2·The predicted transmission loss of perforated tube silencers using the finite element method and experimental results are compared and showed good agreement.
使用有限元法计算穿孔管消声器的传递损失，并与实验测量结果进行了比较，二者吻合良好。
3·A substructure method and a dual reciprocity boundary element method (DRBEM) are applied to calculate four-pole parameters and transmission loss of ducts and silencers with complex flow.
将子结构法和双倒易边界元法联合应用于预测具有三维复杂流存在时管道和消声器的四极参数与传递损失，阐述其基本原理与数值过程。
4·The paper gives a method about the integrative drive of the CAD software for tractor exhaust silencers and a method for DOS change.
介绍了拖拉机排气消声器CAD软件的一体化驱动方法和“状态切换”方法。
5·Therefore, the present thesis will investigate in detail the calculation methods of acoustic attenuation performance of silencers and the acoustic characteristics of perforated elements.
本文针对消声器声学性能的计算方法和穿孔元件的声学特性开展系统研究。