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與很(hen)多系(xi)(xi)(xi)統(tong)(tong)軟(ruan)(ruan)件(jian)(jian)不(bu)(bu)同，系(xi)(xi)(xi)統(tong)(tong)工具并不(bu)(bu)是系(xi)(xi)(xi)統(tong)(tong)自帶(dai)的(de)(de)軟(ruan)(ruan)件(jian)(jian)，而是經過(guo)公司生(sheng)產(chan)包裝(zhuang)，根(gen)據需求制作的(de)(de)適用(yong)于一類(lei)系(xi)(xi)(xi)統(tong)(tong)的(de)(de)軟(ruan)(ruan)件(jian)(jian)。顧(gu)名思義，與系(xi)(xi)(xi)統(tong)(tong)軟(ruan)(ruan)件(jian)(jian)類(lei)似，系(xi)(xi)(xi)統(tong)(tong)工具作用(yong)于系(xi)(xi)(xi)統(tong)(tong)，常見(jian)作用(yong)有系(xi)(xi)(xi)統(tong)(tong)優化(磁盤的(de)(de)分(fen)區、磁盤的(de)(de)清理、磁盤碎片整(zheng)理等(deng))，系(xi)(xi)(xi)統(tong)(tong)管理(驅(qu)動等(deng))，以(yi)及系(xi)(xi)(xi)統(tong)(tong)還原等(deng)。