n.确定；调查；探知
The reliable theory foundation and practice experience are provided for water-flooded layer interpretation and residual oil ascertainment. 研究成果对水淹层测井解释及剩余油确定提供了理论基础和实践经验。
Following the theory of limitation on applying criminal law, the ascertainment of the form of mens rea can not take the standards of fault forms prescribed in other areas of law. 依循刑法的谦抑性原理，罪过形式的确定，不能以其他法领域规定的过错形式为标准。
