A.質(zhì)量計劃 B.質(zhì)量手冊 C.質(zhì)量評價 D.質(zhì)量評審
A.Cr5Mo B.Cr9Mo C.ZCrB D.ZCr12MoV
A.從左手到右手 B.從右手到左手 C.從左腳到右腳 D.從手到胸部(心臟)到腳