短語詞組短語polycrystalline diamond compact bit 聚晶金剛石復(fù)合片鉆頭diamond impregnated bit make 金剛石孕鑲鉆頭sintering diamond drill bit 燒結(jié)金剛石套料鉆Diamond tool bit series 金剛石刀頭系列natural diamond core bit 天然金剛石取心鉆頭diamond reaming bit 金剛石鉸孔鉆頭diamond surfaceset bit 表鑲金剛石鉆頭diamond trepanning bit 金剛石套鉆synthetic diamond impregnated bit 人造金剛石孕鑲鉆頭 返回 diamond bit