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　　此??(ci)次??(ci)出??(chu)艙??(cang)??，神??(shen)舟??(zhou)十??(shi)九??(jiu)號??(hao)航??(hang)天??(tian)員??(yuan)蔡??(cai)旭??(xu)哲??(zhe)和??(he)宋??(song)令??(ling)東?(dong)身??(shen)著?(zhe)中??(zhong)國??(guo)空?(kong)間??(jian)站?(zhan)艙??(cang)外??(wai)航??(hang)天??(tian)服??(fu)??，圓??(yuan)滿??(man)完??(wan)成?(cheng)出??(chu)艙?(cang)活??(huo)動??(dong)??。??至??(zhi)此??(ci)??，中??(zhong)國??(guo)空??(kong)間??(jian)站??(zhan)艙??(cang)外??(wai)航??(hang)天??(tian)服??(fu)已??(yi)經(jīng)??(jing)圓??(yuan)滿??(man)保?(bao)障??(zhang)空??(kong)間??(jian)站??(zhan)任??(ren)務??(wu)以?(yi)來??(lai)的??(de)19次??(ci)出??(chu)艙??(cang)活??(huo)動??(dong)??，使??(shi)用??(yong)年??(nian)限??(xian)次??(ci)數(shù)??(shu)超??(chao)出??(chu)“3年??(nian)15次??(ci)”的??(de)壽??(shou)命?(ming)設(shè)??(she)計?(ji)指??(zhi)標??(biao)???？??(kong)間?(jian)站??(zhan)艙??(cang)外??(wai)航??(hang)天??(tian)服??(fu)是?(shi)我??(wo)國??(guo)首??(shou)個??(ge)在??(zai)軌??(gui)開?(kai)展??(zhan)壽??(shou)命??(ming)評??(ping)估??(gu)工??(gong)作??(zuo)的??(de)飛??(fei)行?(xing)產(chǎn)??(chan)品??(pin)???！　≈??(zhong)國??(guo)航??(hang)天??(tian)員??(yuan)科??(ke)研??(yan)訓??(xun)練??(lian)中??(zhong)心??(xin) 劉??(liu)東??(dong)岳??(yue)：二??(er)代??(dai)艙??(cang)外??(wai)服??(fu)是??(shi)在?(zai)使??(shi)用??(yong)壽??(shou)命??(ming)、安??(an)全??(quan)可??(ke)靠??(kao)性??(xing)、活??(huo)動??(dong)工??(gong)效??(xiao)和??(he)測??(ce)試??(shi)維??(wei)修??(xiu)性??(xing)等??(deng)方??(fang)面??(mian)有??(you)一??(yi)個?(ge)全??(quan)面??(mian)提??(ti)升?(sheng)??。??單??(dan)次??(ci)出??(chu)艙??(cang)活??(huo)動??(dong)時??(shi)間??(jian)延??(yan)長??(chang)至??(zhi)8小??(xiao)時??(shi)以?(yi)上?(shang)??，活??(huo)動??(dong)關(guān)??(guan)節(jié)??(jie)的??(de)壽??(shou)命??(ming)提??(ti)升??(sheng)10余?(yu)倍??(bei)??，活??(huo)動??(dong)工?(gong)效??(xiao)大?(da)幅??(fu)提??(ti)升??(sheng)??，具??(ju)備??(bei)較?(jiao)好??(hao)的??(de)測??(ce)試??(shi)性??(xing)和??(he)維??(wei)修??(xiu)性??(xing)??。。