专家建议，在城市规划和建筑物选址时应注意高氡地质背景区。
Experts suggested that in city planning and attention to the building site should be high radon geological background zone.
通过对四川剑门关景区的调查研究，总结分析了剑门关景区的农业地质背景。
Based on the investigation on Jianmenguan scenic spot of Sichuan province, the agricultural geological background of Jianmenguan scenic spot was summarized.
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