并从理论上论述和分析了篦梳脱粒的机理及其主要特点。
The process and main characteristics of comb-threshing mechanisms are analysed and described in theory.
本文回顾了数字参考咨询服务的产生演变，分析了其主要特点。
This paper first reviews the transformation of the digital reference counseling service and analyzes its main features.
乡村高发病人群有其主要特点：诸如健康状差导致抑郁症的高发危险。
Rather, the rural population contains a higher proportion of persons whose characteristics, such as poor health, place them at high risk for depression.
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