Area data of each land utilization type of Haikou County is analyzed.
对海口市各土地利用类型的面积进行统计分析。
Modern urban business district is the key area of underground space development and utilization.
现代城市商务区是城市地下空间开发利用的重点地区。
Low ash coal is a precondition to develop a new area of coal utilization.
低灰煤是开发煤炭应用新领域的前提。
Low ash coal is a precondition to develop a new area of coal utilization.
低灰煤是开发煤炭应用新领域的前提。
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