| 1. | Radon concentration in ground water was measured at 18 points including two continuous recording stations .
测量了包括两个连续记录台站在内共18个点的地下水的氡浓度。 |
| 2. | Standards for controlling radon concentration in dwellings
住房内氡浓度控制标准 |
| 3. | Study on the temporal change of radon concentration
空气中氡浓度时间变化规律探讨 |
| 4. | Relationship between radon in soil and indoor
土壤氡与室内氡浓度关系的研究 |
| 5. | Scintillation flask method for measuring radon concentration in the air
空气中氡浓度的闪烁瓶测量方法 |
| 6. | Scintillation flask method for measuring radon concentration in the air
空气中氡浓度的闪烁瓶测量方法 |
| 7. | Radon concentration level in the pits of 24 coal mines in zaozhuang mining area
枣庄矿区24所煤矿井下氡浓度水平 |
| 8. | Research on radon concentration and radioactivity level of part coal mine in guizhou province
贵州省部分煤矿氡浓度及放射性水平的研究 |
| 9. | Investigation on the concentration level of radon in the tunnel workplace in a hydropower station
水电站隧道作业场所空气氡浓度水平调查 |
| 10. | According to the results from calculation by theory equation , the beijing city is divided into four zones based on radon geological potential
理论计算结果表明，北京市区氡的地质潜势分为四个不同的区，不同潜势区中室内氡浓度水平发生相应变化。 |
