The annual change regularity of radon release rate from uranium tailings was observed. The optimum season and condition of monitoring the annual average radon release rate are summarized.
通过用该方法对铀尾矿库现场连续一年的监测，观测了铀尾矿库年氡析出率的变化规律，总结出年平均氡析出率的最佳测量季节和测量条件。
Cultivated Land to -0.3% average annual rate of change, of which City bridge area of cultivated land area and the maximum rate of change, the minimum rate of change Shanghe County.
济南市耕地年均变化速度达到-0.3%，其中市中区和天桥区的耕地变化速度最大，商河县变化速度最小。
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