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[天下財(cái)經(jīng)]《2020中國(guó)衛(wèi)星導(dǎo)航與位置服務(wù)產(chǎn)業(yè)發(fā)展白皮書》
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2020/05/19 17:01
 [天下財(cái)經(jīng)]《2020中國(guó)衛(wèi)星導(dǎo)航與位置服務(wù)產(chǎn)業(yè)發(fā)展白皮書》發(fā)布我國(guó)去年衛(wèi)星導(dǎo)航與位置服務(wù)產(chǎn)值近3450億