ultra-low frequency

The types, principles, features, and applications of displacement sensor used in ultra-low frequency active vibration isolation control are introduced.

介绍了超低频主动隔振控制中常用的位移传感器的类型、工作原理、结构特点及适用范围。

The paper introduces the precise measuring circuit of ultra-low frequency voltage based on the characteristics of the measurement of ULF.

根据超低频电压信号测量的特点，给出了一种精密测量电路。

Today, human market makers have largely been replaced by ultra-fast computer systems trading with high frequency.

如今，人类做市商基本上已经被从事高频交易的极速电脑系统取代。

High-frequency trading uses algorithms to trade at ultra-fast speeds often 1,000 times faster than the blink of a human eye seeking to profit from fleeting opportunities presented by minute price changes.

高频交易中，电脑算法执行超高速交易，其速度经常比人眨眼快1000倍，以寻求从微小价格变化带来的短暂机会中获利。

In a few spheres of finance, such as high-frequency trading, it is possible that ultra-short durations cause more harm than good.

在金融的某些领域，比如高频交易，存在超短期限弊大于利的可能。

Ultra-low frequency voltage endurance test for cross-linked cable

交联电缆的超低频耐压试验

Study on Vibration Sensor of Ultra-low Frequency

超低频振动传感器的研究

The relationship between the sleep stage and the ultra-low frequency components of HRV is also considered.

在特征提取中还考虑了HRV中 超低频分量和睡眠的关系.

A novel ultra-low frequency vibration isolator is established.

研制一种新型超低频垂直隔振系统.

The Research on Mechanism of Ultra-low Frequency Vibration Sensor Mechanism Based on DVD Pickup

基于DVD光读取头的超低频振动传感器机理的研究

Research on ultra-low frequency moving-coil servo accelerometer

超低频动圈换能伺服加速度计的研究

Methods: 120 pieces of normal epiderm were got by negative pressure suction and 22 cases patients vitiligo epiderm were wipe off by XH-ultra-high frequency cosmetic apparatus, then auto-transplant the normal epiderm to the vitiligo.

方法：采用XH超高频美容仪去除白斑区表皮，结合负压吸疱法在供皮区取皮的方法治疗22例白癜风患者，共移植皮片120片。

The study is based on market microstructure theory and ultra-high frequency data.

本文针对中国市场的特殊性，以市场微观结构理论为理论基础，利用超高频交易数据，从理论和实证角度深入研究了我国市场微观结构噪音的特点及其对价格行为的影响。