rotary core bit 旋转式取心钻头

Rotary core diamond drilling equipment 取芯钻石钻进设备 ; 旋转金刚石心钻孔设备

rotary core drilling 旋转岩心钻探

Rotary core drilling equipment 旋转钻芯设备

rotary type side core barrel 旋转型井壁取芯筒 ; 旋转型井壁取心筒

rotary shell core machine 旋转壳芯机

rotary regenerator core 旋转式再生器芯子

rotary disk core 转盘磨心

single rotary double core barrel 单动双管钻具