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含密封源仪表是一种通过探测有无待测物粒子注量变化或探测粒子与物质相互作用所产生的次级粒子注量来检测有关量的一种仪表装置。通常由放射源、辐射探测器、二次仪表3部分组成。在使用这类仪表时其主要组成部分之一的放射源所释放出的射线也可导致工作人员和周围群众的放射损伤。
A sealed source instrument is an instrument device that measures the amount of interest by detecting the amount of secondary particles produced by changes in the particle size of the analyte or the interaction between the particle and matter. Usually by radioactive sources, radiation detectors, secondary instrument 3 parts. The radiation emitted by the radioactive sources, one of the main components of such meters, can also cause radiation damage to workers and the surrounding population.