unit drill

Install the drill& workover unit onto the truck, which raises deportion of the units, shorts the installation readiness time of the unit and also raises the drilling timeefficiency.

将钻修装备安装在运载车上，提高了设备的移运性，缩短了钻修机的安装准备时间，提高钻井时效。

Using a diamond drill instead of the test hole to examine volume unit weight and to inspect pressure water testing for impermeability and quality.

应用金刚石钻机代替挖试坑法检测砌体容重及定期进行压水试验以检查、控制砌体透水率的质量控制方法。

The thin film pyroelectric detector and the thin film prepare unit-type drill head

薄膜型热释电探测器及其薄膜的制备组合钻床钻头，标准钻头

A kind of two_speed tapping unit installed on the bench drill is introduced, and its using result is expounded.

介绍了安装在台钻上的一种双速攻丝装置，并阐述了它的使用效果。

The improvement of KY& 150 type rotary drill travel unit

KY-150型牙轮钻机行走部改造