bit cone 钻头牙轮
cone bit design layout 牙轮钻头啮合图
core cone bit 牙轮取心钻头
cross-section cone bit 四牙轮钻头
disc one-cone bit 盘式单牙轮钻头
double-cone bit 双牙轮钻头
mono-cone bit with offset 偏心单牙轮钻头
offset cone bit 移轴牙轮钻头
positioning of small diameter cone bit 小径锥面钻头定位
rock bit cone fishing socket 牙轮的打捞工具
roller cone bit 牙轮钻头
steel tooth roller cone bit 钢齿牙轮钻头
Three Cone Bit 三牙轮钻头
THREE-CONE BIT 三牙轮钻头
tooch cone bit 牙轮钻头
tri cone bit 牙轮钻头; 三牙轮钻头
TRI-CONE BIT 三牙轮钻头; 三锥磨
twin-cone bit 双牙轮钻头
two-cone bit 双牙轮钻头