The model and mechanism of radioactiveanomaly are the theoretical basis of radioactive prospecting in the oil and gas fields.
油气田放射性异常模式及其机理,是油气田放射性勘查的重要理论依据。
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An "anomaly" can also mean that a safety problem at a facility could have resulted in greater damage than it did or that radioactive material has been stolen or transported incorrectly.