| 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. | Scintillation flask method for measuring radon concentration in the air 空气中氡浓度的闪烁瓶测量方法 |
| 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. | 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 |
| 7. | 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 |
| 8. | The usual way to model indoor radon concentrations is to assume lognormal distributions of concentrations on a given territory 模式化室内氡气浓度时常假设,其于一定范围内为对数常态分布。 |
| 9. | The results show that evt performs better than lognormal pdf for real data sets characterized by high indoor radon concentrations 结果显示极端值理论对高氡气浓度分布区域之预测佳于一般对数常态分布模式。 。 |
| 10. | Objective to analyze the temporal and spatial variations of radon concentration by measuring in some labs and typical buildings in chengdu 摘要目的通过对成都某几个氡气观测实验室以及代表性建筑物的氡浓度测量,分析氡浓度的时间变化特点和垂直变化特点。 |