English translation for "ring drilling"

环向钻孔法
环形钻进
岩心钻进

Similar Words：

"ring down system signaling equipment" English translation, "ring down the curtain" English translation, "ring down trunk signaling" English translation, "ring drawbar" English translation, "ring drier" English translation, "ring dripper" English translation, "ring duct" English translation, "ring dye laser" English translation, "ring dyke" English translation, "ring dynamics object" English translation