经过二十多年的发展,放射性同位素仪表已经成为常规的工业检测仪表之一,被广泛地应用在各类工厂和实验室里.仪表的种类有厚度计、密度计、料位计、成分分析仪、水分仪、流量计和压力计等.使用的射线有α射线、β射线、λ射线、X射线和中子流等.这些射线和物质的相互作用有电离 After more than two decades of development, radioisotope instruments have become one of the routine industrial instrumentation and are widely used in various factories and laboratories. The types of instruments are thickness meters, density meters, level meters, composition analysis Meters, moisture meters, flow meters and pressure gauges, etc. The rays used are α rays, β rays, λ rays, X rays and neutron flux, etc. The interactions of these rays and substances are ionized