This dissertation first selects satellite remote sensing image which can be used in the country 1:50000 DLG(Digital Line Graph) data producing.是什么意思_This dissertation first selects satellite remote sensing image which can be used in the country 1:50000 DLG(Digital Line Graph) data producing.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句