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原標(biāo)題：2019最新国产不卡a国内2018

　　肉?(rou)、蛋??(dan)、奶??(nai)?，這??(zhe)些??(xie)食??(shi)物??(wu)中??(zhong)含??(han)有??(you)豐??(feng)富??(fu)的?(de)蛋??(dan)白??(bai)質(zhì)??(zhi)?，可??(ke)以?(yi)提??(ti)供??(gong)人??(ren)類?(lei)身??(shen)體??(ti)所??(suo)需??(xu)營??(ying)養(yǎng)??(yang)??。??但??(dan)天??(tian)然??(ran)的??(de)蛋??(dan)白??(bai)質(zhì)??(zhi)難?(nan)以??(yi)發(fā)??(fa)揮??(hui)這??(zhe)些??(xie)功??(gong)能??(neng)?，科??(ke)研??(yan)人??(ren)員??(yuan)需??(xu)要??(yao)對??(dui)天??(tian)然??(ran)蛋?(dan)白?(bai)質(zhì)??(zhi)的??(de)功??(gong)能??(neng)進(jìn)??(jin)行??(xing)設(shè)??(she)計(jì)??(ji)和??(he)改?(gai)造??(zao)?，才??(cai)能??(neng)使??(shi)它??(ta)成??(cheng)為??(wei)滿??(man)足??(zu)應(yīng)??(ying)用??(yong)需??(xu)求??(qiu)的??(de)產(chǎn)??(chan)品?(pin)??。長??(chang)期??(qi)以??(yi)來??(lai)?，蛋??(dan)白??(bai)質(zhì)??(zhi)設(shè)?(she)計(jì)??(ji)改??(gai)造??(zao)一??(yi)直??(zhi)面??(mian)臨??(lin)時(shí)?(shi)間??(jian)長??(chang)、成??(cheng)本??(ben)高??(gao)等?(deng)難??(nan)題??(ti)??。。