Based on the original data of TM in 1988, 1992 and 1998, then after some processing and analysis, the author have the thematic data of land-use by interpretation.
本文利用1988、1992和1998年的TM原始数据，经处理分析后，通过解译，得到三个时期的土地利用专题数据。
Based on the original data of TM in 1988, 1992 and 1998, then after some processing and analysis, the author have the thematic data of land-use by interpretation.
本文利用1988、1992和1998年的TM原始数据，经处理分析后，通过解译，得到三个时期的土地利用专题数据。
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