In plastic or hard plastic clay, or water content smaller sand application microgroove blade drill, slowly and evenly drilling.

在可塑或硬塑粘土中，或含水量较小的砂土中应用密纹叶片钻杆，缓慢地均匀地钻进。

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Pansteel Blast Furnace used simply electric taphole drill for a long time, which cannot apply to higher smelting intensity and the new clay gun.

攀钢高炉炉前开铁口设备一直使用简易的电动开铁口机，已不适应高炉高强度冶炼和铁口新型炮泥的要求。

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The council said two companies were applying to Mendip district council for permission to test drill for the gas, which is found in shale formed from deposits of mud, silt, clay and organic matter.

FORBES: Not a Good Argument Against Fracking