Objective To research and assess radon concentration and radioactivity level of part coal mine in Guizhou province.

目的研究和评价贵州省地下煤矿氡气浓度和放射性水平。

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Coal with high radioactivity level and residue will be harmful to environment of storing site, affective the reuse of residue.

部分放射性核素较高的煤及产生的煤渣将会对堆放的环境以及煤渣的再利用产生一定影响。

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This paper reports the investigation results of natural radioactivity level in river, lake. spring, well and tap water in Jiangsu Province.

本文报道了江苏省江河、湖泊、泉、井、近海海域和自来水中天然放射性核素浓度的调查结果。

youdao

The International Atomic Energy Agency reported today that the level of radioactivity at the Daiichi plant has fallen sharply from a rate of 1, 190 millirem per hour to 60 millirem per hour with a span of 6 hours.

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