ultra low-volume

Study on Ultra Low Frequency Vibration Sensor by Using Magnetoelectric Speedometer

用磁电式速度计实现超低频振动传感器的研究

Even as the economy appears to be on firmer footing, the central banker has held his course toward keeping short-term interest rates ultra low until at least the end of 2014.

即便如今经济增长看来有了更为坚实的基础，这位央行行长仍坚持至少在2014年底前保持超低短期利率。

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。

Study on Vibration Sensor of Ultra-low Frequency

超低频振动传感器的研究

The traditional traveling-wave differential protection cannot be applied to ultra/ extra high voltage transmission line with shunt reactor, so this paper describes a novel differential current expression. Based on traveling-wave differential protection a new scheme with low proportional restraint characteristic is presented.

传统的行波差动保护无法应用于带并联电抗器特/超高压输电线路，为此给出了一种新的行波差流表达式，并据此提出一种具有轻微比例制动特性的行波差动保护实用方案。