first attributive position 第一形容位置
second attributive position 第二形容位置
The syntax position includes attributive, predictive, adverbial, complement, subject and object.
句法位置包括：定语、谓语、状语、补语、主语、宾语。
Digital Terrain Model is a general designation of space topographical data set, and it is the digital description with the figure of space position and topographical attributive character.
数字地形模型是空间地形数据集合的统称，是具有空间位置特征和地形属性特征的数字描述。
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