介绍了煤层瓦斯含量评价的目标和内容，就煤层瓦斯含量评价的方法、评价程度和工作量等进行了探讨。

This paper introduces the aims and contents of the evaluation on the seam gas content, and probes into the methods, degrees and workload of the evaluation on seam gas content.

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本文就老年人认知功能下降的影响因素，如年龄、性别、文化程度、情感障碍、生活方式、饮食习惯、躯体状况等做一综述。

This article reviews on the influential factors concerning the decline of cognition ability such as age, gender, education level, affective disturbance, life style, eating habit, body situation, etc.

youdao

本文就老年人认知功能下降的影响因素，如年龄、性别、文化程度、情感障碍、生活方式、饮食习惯、躯体状况等做一综述。

This article reviews on the influential factors concerning the decline of cognition ability such as age, gender, education level, affective disturbance, life style, eating habit, body situation, etc.

youdao