An obliquehole through the glass pipette holder above the lateral hole for cell seal suction is drilled, through which a microcatheter o.
利用通用的微电极夹持器在其抽吸负压的侧管上方钻一斜孔直通夹持器中央管腔。
2
The swivel-tube barrel can effectively increase core recovery rato. suitable for drilling in formations in which obliquehole comes easy. It is effective to assure hole quality.
单动双层岩芯管钻具结构简单、操作方便、同轴度好、适用寿命长，能有效地提高岩、矿芯的完整度。
3
At the same time, the new concept of reinforcement of slope by means of integrating the uses of tendon framework and the upward oblique unwatering hole techniques are presented by author too.