A novel method for active fiber refractive index measurement based on beat frequency interrogation of the multi-longitudinal-mode distributed Bragg reflector ( DBR) fiber laser was presented. 介绍了一种基于多纵模分布布拉格反射(DBR)光纤激光器拍频解调的有源光纤折射率测量方法。
Also described are the basic principles and features of the methods, which include active and passive gamma ray spectrometry, X-ray fluorescence, passive neutron counting and neutron interrogation and so on. 所采用的方法如无源γ射线法、X射线法、无源中子计数法及有源中子质询法等。介绍了这些方法的原理、特点和主要用途。
However, when it plays an active role in the investigation and interrogation, it also has produced a number of problems because of the effect of many aspects such as the presumption of guilt. 然而,侦查讯问在发挥积极作用的同时,受有罪推定、轻公正、重效率、轻程序、重实体传统思维等多方面因素的影响,侦查讯问也产生了许多问题。