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作者对苏联放射性同位素装置的安全进行了分析。放射性同位素装置中绝大多数为γ射线源活性大于18.5吉贝可,未使用率大于40%。放射性
The author analyzed the safety of the radioisotope devices in the Soviet Union. The vast majority of radioisotope devices for γ-ray source activity greater than 18.5 Gibbere, unutilized rate greater than 40%. radioactivity