| 释义 |
acoustic wave filter
基本例句
消声器
Aeroacoustic governing equations is established for non-concentric perforated mufflers based on one dimensional plane wave theory.摘要根据管道一维平面波理论对非同轴穿孔消声器，建立声学控制方程。
On the basis of thermodynamic theory and acoustic principle, a kind of exhaust heat exchange muffler for a road bus has been developed.依据热工理论和声学原理，研制了一种公路客车用排气换热消声器。 |