目的对温泉地区环境辐射水平作放射卫生学评价。
Objective To evaluate the development in radiation hygiene of thermal spring water utilization.
实验数据表明，环境辐射水平受到基底岩性的控制影响。
Experimental data show that radiation level of surroundings depends on the control influence of lithology.
对人类的放射剂量如果与自然环境辐射水平相比属低水平。
Radiation doses to humans may be characterized as low-level if they are comparable to natural background levels.
对医用电子直线加速器房周围环境辐射水平进行了监测。
The monitoring results of the environmental radiation levels around medical electron linear accelerator buildings and problems associated with them are described.
北京环境辐射水平地理分布的大致趋势是西北部山区较高，东南部平原区较低。
The geographical distribution of the environmental radiation levels is higher in the west-north mountain area and lower in the east-south plain of Beijing.
但环境辐射水平增加并不一定是由于核电站意外泄漏放射性物质，亦有可能与气象因素有关。
Such an increase can be of a meteorological origin and need not be due to an accidental release of radioactive materials from the nuclear power stations.
环境伽马辐射水平可以受地质和降雨、气压及气流等自然及天气因素所影响而波动。
The ambient gamma radiation levels may vary due to natural causes, which include geological and meteorological conditions such as rainfall, pressure and wind.
结论这种私自开采铀矿已造成了被污染环境生活群体的剂量大大超过天然辐射本底的正常水平，应予以关注。
Conclusion Illegal uranium mining had brought about the fact that the annual effective dose of the inhabitants who lived in contaminated environment was makedly high above the normal level.
因此，在低水平辐射环境中未见癌症增加现象。
So, there was no evidence of incidence increment of radiogenic cancer in workers exposed to low-level ionizing radiation.
因此，在低水平辐射环境中未见癌症增加现象。
So, there was no evidence of incidence increment of radiogenic cancer in workers exposed to low-level ionizing radiation.
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