An annotation is a particular type of feature structure that is attached to a region of the artifact being analyzed.
注释是一种特殊的特征结构，它被附加到需要分析的工件的某个区域。
The paper analyses the mathematical structure, technical feature, algorithm type and challenges of user preference extraction algorithm.
分析了用户偏好提取算法的数学结构、技术特点、算法类型及研究面临的挑战。
This article primarily introduces the structure type, operation feature as well as design calculations of the device.
这里着重介绍了辊式校平机的结构形式、使用特点、设计计算等。
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