1) basket-type core barrel
篮式取心筒
2) double-tube core barrel,swivel type
内筒不转式双筒取心筒
3) double-tube core barrel ,rigid type
内筒转动式双筒取心筒
4) barrel-type core bit
筒式取心钻头
5) double-tube core barrel
双筒取心筒
6) core shoe
取心筒鞋