The precisemeasurement of temperature and density of ultra-cold atoms becomes an important subject.
对捕获的冷原子团温度、密度的精确测量也成为一个重要的研究课题。
2
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。
3
It has easy structure, convenient operating, steady performance and high precision, so it can be widely used for precisemeasurement of ultra thin things and has go...