冲击钻

Our company specializes in manufacturing and exporting a series of electric tools, including rotary hammer, impact drill etc.

电镐杭州美丹工具有限公司专业生产和出口各种电动工具，包括电锤、冲击钻等。

Currently, the widespread adoption of a keel approach survey containing floor, the impact of drilling or Dianchui used in the drilling 50,730 holes 5-6 cm in wood cleat placement Kong Lane, then keel governor wooden wedge.

目前，普遍采用打龙骨的办法铺装实木地板，用冲击钻或电锤在楼板上钻5至6厘米的孔，在孔里安插木楔子，再将龙骨钉入木楔子。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。