查询词典 caving-in

Such as adaptation to the hard seam roof conditions resistance to a strong frame, adapted to the big mining thick coal seam mining height and caving hydraulic support, adapted to thin seam mining and steep seam mining and other special stent.

如适应于坚硬煤层顶板条件的商阻力强力支架，适应于厚煤层开采的大采高和放顶煤液压支架，适应于薄煤层开采和急倾斜煤层开采的特种支架等。

It is known that exact calculation of formation pressure is significant not only for the proper and costeffective selection of drilling fluid properties, but for the prevention of drilling problems like blowouts, lost circulations and well caving.

地层压力的准确计算对于合理、经济地选用钻井液性能，防止井喷、井漏、井塌等复杂钻井情况的发生具有重要意义。

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。