有时，滤清器外部看似清洁，但是其内部已经非常脏了，此时必须立即进行更换。
Sometimes, filters, but its exterior looks clean inside have very dirty, must immediately replaced.
计算空气滤清器在模拟发动机激励下，壳体结构与空气滤清器内部声腔耦合产生的辐射噪声。
The radiation noise by the coupling effect of the filter's case and the interior acoustic chamber is computed when the air filter is excited by the simulated engine force.
应用推荐