low frequency

The low frequency acoustic design for an automobile body structure is very important to improve the carborne acoustic comfortability and to enhance the competitiveness for the car products in market.

车身结构低频声以提高车辆乘坐的声舒适性为目的，于增强汽车产品的市场竞争能力具有十分重要的义。

The high pass filter cuts the lowest frequencies. This cab be useful in rooms where low frecuencies are amplified and tend to be "boomy".

高通滤波器可以去除最低频率，低频被放大，容易形成嗡嗡声的房间，非常有帮助。

Animal experiment and clinical study showed that low frequency electric stimulation on pedunculopontine nucleus (PPN) could obviously reduce the akinesis of PG.

文章针核的解剖、生理、神经纤维联系及其和帕金森病的关系简要综述。