On the basis of distribution of radioactive elements and geological background, the theory equation of radon exhalation rate is derived from the decay rule of radioactive elements and gas diffusion.
根据放射性元素分布规律、地质背景及放射性元素衰变等，建立了计算氡析出率的理论公式。
In recent years, the rule of sandstones distribution is a hot topic in the oil reservior field, and is a higher request that the oil and gas development proposes to reservoir research.
近年来，砂体展布规律是油层储藏研究的热点和重点，也是石油和天然气勘探与开发对储层研究提出的更高要求。
In recent years, the rule of sandstones distribution is a hot topic in the oil reservior field, and is a higher request that the oil and gas development proposes to reservoir research.
近年来，砂体展布规律是油层储藏研究的热点和重点，也是石油和天然气勘探与开发对储层研究提出的更高要求。
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