低频

This instrument has two advanced and key functions,spired-type massage and vibration-type losing-weigh.

高气血通 集结气血循环机和治疗仪两大功效优势。

Provides a 6dB-per-octave rolloff filter at 115Hz.

提供个115赫兹时每八度6分贝上移滤波器。

The design finished includes a bypassable low noise amplifier (LNA) and quadrature downconverter integrated on chip.

已经完成设计包括个片上集成可直通式噪声放大器（LNA）和个片上集成换式混器。

Abstract： In many power electronic applications ferrite cores of magnetic compon ents are biased with a DC or low-frequency premagnetization.

摘 要： 在电力电子技术中应用铁氧体铁心磁性元件，铁心中往往存在直流或交流预磁化情况。

For general exploringobjects requirement, narrow pulse signal with tens millimicro second to millimicrosecond has the frequency spectrum from DC to thousands MHz.

按照对地目标探测需要,通常采用纳秒到十纳秒量级电磁探测窄脉冲,信号谱具有从直流直到千兆赫兹宽带。

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率，对被放大，容易形成嗡嗡声房间，非常有帮助。

The frequency of HF is determined by the ratio of respiratory frequency and heart rate.The results also indicated that nonadditivity of heart rate modulation by sympathetic an...

高峰率是呼吸率与心率之比，和极可能与交感和副交感神经调节心率非可加性有关。

This article is introductions of subfebrile diagnosic and pulse magnetic field therapy for malignant tumour with a Humanbody Energy Detector and a Pulse Magnetic Field Therapy Instrument.

用人体热能辐射测试仪早期微热诊断恶性肿瘤，用超脉冲磁场癌症治疗仪抑制癌瘤和提高免疫细胞功能。

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.

车身结构声学设计以提高车辆乘坐声学舒适性为目，对于增强汽车产品市场竞争能力具有十分重要意义。