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學(xué)習(xí)快評(píng)丨qibao666888　　在??(zai)經(jīng)??(jing)過(guò)??(guo)3個(gè)??(ge)小?(xiao)時(shí)??(shi)的??(de)下??(xia)放??(fang)回??(hui)收??(shou)后??(hou)?，上??(shang)午?(wu)9點(diǎn)??(dian)10分??(fen)?，重??(zhong)力??(li)柱??(zhu)出??(chu)水??(shui)??。??　　凌??(ling)晨??(chen)兩??(liang)點(diǎn)??(dian)??，“雪??(xue)龍??(long)2”號(hào)??(hao)抵??(di)達(dá)??(da)重??(zhong)力??(li)柱?(zhu)作?(zuo)業(yè)??(ye)的??(de)預(yù)??(yu)定?(ding)位??(wei)置?(zhi)??。??從??(cong)海?(hai)面??(mian)到??(dao)海??(hai)底??(di)超??(chao)過(guò)??(guo)2800米??(mi)??，要??(yao)想??(xiang)給??(gei)地??(di)球??(qiu)“打??(da)針??(zhen)”??，怎?(zen)么??(me)才??(cai)能??(neng)保??(bao)證??(zheng)不?(bu)打??(da)偏??(pian)呢??(ne)？??船??(chuan)上??(shang)啟??(qi)動(dòng)??(dong)了??(le)動(dòng)??(dong)力??(li)定??(ding)位??(wei)系??(xi)統(tǒng)??(tong)??。。