Technical code for hydrogeological driling of electrical power engineering 电力水文地质钻探技术规程
Discussion about the high quality and long life of rock - driling bit 探讨提高凿岩钎具质量和使用寿命的方法
It is used suitable for driling in the reinforced concrete and driling all kinds of stones 它适用于在钢筋混凝土和各类石材上钻孔。
Interpretation of gravity and magnetic anomalies obtained at continental scientific driling site in subei 苏北大陆科学钻探靶区重磁异常反演解释
Szo222 class drill machine processed glass is pneumatically gripped , driling is alternativelg done by upper and reverse drills , feeding is automatically operated operation platform can be pneumatically elevated , it can operate on wide surface Szo222型玻璃钻孔机采用气动装夹玻璃,上下钻头先后钻孔自动取料,工作台气动升降,可加工面积范围广。