50hz

It has a high sensitivity and measurement range of 2 ~ 50Hz .

本传感器可用于土中振动位移、速度等参数的测量，它具有高的灵敏度，使用频率范围为2～50赫兹，经现场实测，效果良好。

The power frequency ( 50Hz ) into the exchange of arbitrary frequency , arbitrary voltage inverter device known as the inverter .

把工频电源（50Hz）交流变成任意频率、任意电压的逆变装置称为变频器。

Mains power supply ( 50Hz ) is one of the most significant disturbances in Brain-computer interface ( BCI ) systems .

脑机接口（BCI）系统中存在着各种干扰，工频（50Hz）是其中最重要的干扰之一；

In August 2000,1080i / 50Hz will be identified as the standard of China 's high-definition television signal source .

2000年8月，1080i／50Hz即被确定为中国的高清晰度电视信号源标准，2008年北京奥运会的电视转播将全程采用高清系统完成。

The temperature distribution inside the surface layer of a roll (φ 420 ) is measured on 50Hz / 250Hz dual frequency induction hardening machine .

在50Hz／250Hz双频淬火机床上，对φ420轧辊表面层内的温度分布进行了测试。

Precision of Multi-GNSS kinematic positioning with high-rate ( 50Hz ) has been tested based on high-accuracy verification platform allocated with multi-mode GNSS receivers .

（？）利用配置多模GNSS接收机的高精度校验平台验证了高采样率（50Hz）多模GNSS动态定位精度。

Because the electric power system harmonics which are in the 50Hz ~ 31 × 50Hz range are mainly studied , the electric power system harmonics simulator rig may adopt the SPWM control mode .

电力系统中要研究的谐波主要是在31次范围内的谐波，谐波频率都不是很高。因为该装置要输出的谐波频率不高，所以采用通常的SPWM控制就可以实现。

Abstract Fifty patients with vertebrobasilar transcient ischemic attacks were studied by means of routine and high repetitive rate ( 50Hz ) determinations of brainstem auditory evoked potential ( BAEP ) .

对50例VB·TIA患者，进行常规脑干听觉诱发电位（BAEP）检测和高刺激重复率（50Hz）BAEP检测。

The second , designed the hardware based on the requests of the wearable mobile monitoring system including the ECG amplifier 、 50Hz filter 、 highpass / lowpass filter 、 power supply transfer circuit and the signal process system .

其次，在满足可穿戴式移动监护系统基本要求的基础上完成了终端的硬件设计，包含设计了心电采集放大器、50Hz滤波器、高通/低通滤波器、电源转换电路以及信号处理系统。

Results : When exposed to 65G / 50Hz magnetic field , the locomotor activity increased and spatial discrimination memory impaired in Y-maze , however , showing no effect on performance in Morris water maze .

结果表明：65高斯/50Hz磁场显著增高小鼠的活动性，并损伤小鼠Y-迷宫的空间辨别能力，但对Morris水迷宫的空间、非空间学习记忆无明显影响。

This paper presents a method of how to design a 50Hz ± 5Hz band-pass FIR digital filter used in power frequency parameters measure software using Delphi programmed-language . And this way also provides a realizable method of digital filter based on advanced programmed-language .

介绍了一种利用Delphi高级语言设计实现电力线路在线参数测量软件中所要求的50Hz±5Hz带通工频数字滤波器的方法，提供一种基于高级编程语言的数字滤波器实现方法。

Objective To explore the clinical effects of low-frequency ( 50Hz ) pulse electrotherapy ( LFPE ) in the treatment of prostatic pelvic floor muscular spasm syndrome ( PPMS ), and the influence of this procedure on the temperature of rabbit urethral mucosa .

目的探讨经尿道低频（50Hz）脉冲电流治疗前列腺盆底肌肉痉挛综合征（PPMS）的临床疗效及其对家兔尿道粘膜温度的影响。

This paper describes how to design and analyze a 50Hz ± 5Hz band-pass FIR digital filter used in power frequency parameters measure apparatus using respectively a self-defined Delphi class and the functions supplied by Matlab . A method to share data between Delphi and Matlab is also given .

说明分别用Delphi和Matlab设计实现电力线路工频参数测量装置中所要求的50Hz±5Hz带通数字滤波器的方法，提供一种Delphi和Matlab共享数据的方法。

The results show that the topology of the ballast is simple , the DC bus voltage below 300V , the topology is fit for 220V / 50Hz , the power factor is 0.98 , THD is 13 % , and the ballast is dimmed smoothly .

结果表明，这种镇流器结构简单，直流母线电压低于300V，适合于220V/50Hz电网工作，功率因数达到0.98，THD低于13%，并且能够实现平滑调光。