欧美丰满肥臀一区,亚洲乱伦性爱小说视频,最新无码人妻在线不卡,京广成人小电影a三区,先锋色色AV网,亚洲伊人涩涩

原標(biāo)題：被调教跪着打屁股

　　中??(zhong)國(guó)??(guo)工??(gong)程??(cheng)院??(yuan)院??(yuan)士??(shi)、中??(zhong)國(guó)??(guo)鐵??(tie)道??(dao)學(xué)??(xue)會(huì)??(hui)理??(li)事?(shi)長(zhǎng)??(chang)盧??(lu)春??(chun)房??(fang)指??(zhi)出??(chu)?，縱??(zong)觀??(guan)全??(quan)球??(qiu)鐵?(tie)路??(lu)調(diào)??(tiao)車??(che)技??(ji)術(shù)??(shu)的??(de)發(fā)??(fa)展?(zhan)歷??(li)程??(cheng)?，從??(cong)最??(zui)初??(chu)的??(de)手??(shou)工??(gong)操??(cao)作??(zuo)到??(dao)機(jī)??(ji)械??(xie)化??(hua)作??(zuo)業(yè)??(ye)?，再??(zai)到??(dao)自??(zi)動(dòng)?(dong)化??(hua)控?(kong)制?(zhi)?，雖??(sui)取??(qu)得??(de)顯??(xian)著?(zhu)進(jìn)??(jin)步??(bu)?，但??(dan)仍??(reng)普??(pu)遍??(bian)存??(cun)在??(zai)軟??(ruan)硬??(ying)件??(jian)成??(cheng)本??(ben)高??(gao)、系??(xi)統(tǒng)??(tong)管??(guan)理??(li)復(fù)??(fu)雜?(za)、維??(wei)護(hù)??(hu)難??(nan)度??(du)大?(da)等??(deng)現(xiàn)?(xian)實(shí)??(shi)問??(wen)題??(ti)?。??　　據(jù)??(ju)介??(jie)紹??(shao)??，該??(gai)系??(xi)統(tǒng)??(tong)目??(mu)前??(qian)已??(yi)具??(ju)備??(bei)大??(da)規(guī)??(gui)模??(mo)推??(tui)廣??(guang)應(yīng)??(ying)用??(yong)條??(tiao)件??(jian)??，可?(ke)有?(you)效??(xiao)帶??(dai)動(dòng)??(dong)中??(zhong)國(guó)?(guo)重??(zhong)載?(zai)鐵?(tie)路??(lu)智??(zhi)能??(neng)管??(guan)控??(kong)水??(shui)平??(ping)??。??(完??(wan))。