(: ; : ; : Huá'ān Xiàn; : Hôa-an-koān) is a county of City, in the far south of Fujian province, People's Republic of China. The county comprises most of the lower watershed of the 's north branch () and has long been a transport corridor. The first rail conn. [pdf]
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A drifter drill, sometimes called a rock drill, is a tool used in and to into . Rock drills are used for making holes for placing or other explosives in , and holes for quarrying. While a rock drill may be as simple as a specialized form of chisel, it may als. [pdf]
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