radioactive concentration

This paper evaluates the airborne radioactive concentration, dose-rate of internal and external exposure as well as purification mode and operating time of ventilation systems in reactor building.

本文对燃料破损可能导致的气载放射性浓度、场所内、外照射剂量率进行了估算，同时对通风系统的净化方式、净化时间进行了评估。

The prediction of the concentration of radioactive nuclides is the basis and premise of emergency action and radioprotection.

放射性核素浓度的确定是放射性事故抢险救援和辐射防护等工作的基础和前提，是放射性事故应急救援的重要组成部分。

The Geiger counter registered a high concentration of radioactive particles.

盖革计数器示出放射性粒子的高浓度.

The results indicate that the radioactive cloud released from the Chernobyl accident arrived to Beijing area on May 2, 1986. Generally speaking, the concentration of radioactive cloud in north China was greater than that in south China.

监测结果表明，切尔诺贝利核电站释放出来的放射性烟云于5月2日前抵达北京地区。