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　　此??(ci)次??(ci)出??(chu)艙??(cang)??，神??(shen)舟??(zhou)十??(shi)九??(jiu)號(hào)??(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(guó)??(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(dòng)??(dong)?。??至?(zhi)此??(ci)??，中??(zhong)國(guó)??(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(wù)??(wu)以??(yi)來(lái)??(lai)的??(de)19次??(ci)出??(chu)艙??(cang)活??(huo)動(dòng)??(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(jì)??(ji)指??(zhi)標(biāo)??(biao)??？??(kong)間??(jian)站??(zhan)艙??(cang)外??(wai)航??(hang)天??(tian)服??(fu)是??(shi)我??(wo)國(guó)??(guo)首??(shou)個(gè)??(ge)在??(zai)軌?(gui)開(kāi)??(kai)展??(zhan)壽??(shou)命??(ming)評(píng)??(ping)估??(gu)工??(gong)作??(zuo)的??(de)飛??(fei)行??(xing)產(chǎn)??(chan)品??(pin)??！　≈??(zhong)國(guó)??(guo)航??(hang)天??(tian)員??(yuan)科??(ke)研?(yan)訓(xùn)??(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(dòng)?(dong)工?(gong)效??(xiao)和??(he)測(cè)??(ce)試??(shi)維??(wei)修??(xiu)性??(xing)等??(deng)方?(fang)面??(mian)有??(you)一??(yi)個(gè)??(ge)全??(quan)面?(mian)提??(ti)升??(sheng)??。?單??(dan)次??(ci)出??(chu)艙?(cang)活??(huo)動(dòng)??(dong)時(shí)??(shi)間??(jian)延??(yan)長(zhǎng)??(chang)至??(zhi)8小??(xiao)時(shí)??(shi)以??(yi)上??(shang)??，活??(huo)動(dòng)??(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(dòng)??(dong)工??(gong)效??(xiao)大??(da)幅??(fu)提??(ti)升??(sheng)??，具??(ju)備?(bei)較??(jiao)好??(hao)的??(de)測(cè)??(ce)試??(shi)性??(xing)和?(he)維??(wei)修??(xiu)性??(xing)??。。