查询词典 mining

Frequent subgraph mining is an active research topic in the data mining field.

频繁子图已成为数据挖掘领域研究的热点之一。

College of Computer and Information Engineering,Jiangxi Agriculture University,Nanchang 330045,ChinaFrequent subgraph mining is an active research topic in the data mining community.

如何从大量的图中挖掘出令人感兴趣的子图模式已经成为数据挖掘领域研究的热点之一。

With the mining depth of increased, the sublevel height must be increased so as to decrease mining cost.

这样的参数可以说从60年代无底柱分段崩落法引进到我国，一直成为无底柱分段崩落法的结构的主导。

ABSTRACT Sublevel caving method is a high efficiency mining method for underground mine, it has many advantages, such as a simple mine stope, good work condition, high mechanization and low mining cost. Up to now, this method has been used in more than 85 percent of all underground iron mine.

无底柱分段崩落法是一种高效率的采矿方法，具有采场结构简单，作业条件好，机械化程度高，回采强度大，采矿成本低等优点，迄今应用该采矿方法采出的矿石量约占我国地下铁矿采出矿石总量的85％。

And it will be prospected in controlling coal-mining-induced subsidence in other big coal mining areas.

该成果对其它大型矿区的采煤沉陷控制也将具有一定的参考价值和推广应用前景。

During the process of mining maximal frequent item sets, when minimum support is little, superset checking is a kind of time-consuming and frequent operation in the mining algorithm.

最大频繁项集的挖掘过程中，在最小支持度较小的情况下，超集检测是算法的主要耗时操作。

It is a highly serious problem of geotechnical engineering that underground mining arouse terrane movement and ground subsidence, which, at the same time, causes a great deal of ground fissure from coal mining.

煤层的地下开采引起煤层上覆岩层移动变形和地表沉陷已经成为一个非常严重的岩土工程问题，同时伴随着地表沉陷在开采范围内会产生大量的地表裂缝。

So, in order to achieve safety mining , itis necessary in the course of underground mining that research the super terrane moving-rule and the effect on ground movement and the stope ground pressure's regularities ofdistribution.

因此，为实现矿山的安全开采，在地下开采过程中，必须对地下开采引起的上覆岩层的移动规律及其对地表移动的影响和采场地压分布规律进行研究。

Through the contrast analysis on the chemical constitution of the magnetic iron ore and the plagioclaseamphibolite in Nanling ultra poor magnetite, and the analysis of graphs of and (FeO+Fe2O3+TiO2)Al2O3MgO, combining the geological features of mining area and the ore body characteristics, the conclusion can be drawn as follows: the plagioclaseamphibolites including magnetite and the plagioclaseamphibolite in Nanling mining area are formed from the oceanic tholeiite with rich iron after the deteriorating, and their genesis types should be the ultrapoor iron deposit of weathered residual origin.

通过对南岭超贫磁铁矿的磁铁矿石、斜长角闪岩化学成分的对比分析，结合矿区地质特征和矿体特征，对矿体进行n-n和w( FeO+Fe2O3+TiO2)-w(Al2O3)-w 图解分析，结果显示南岭矿区的含磁铁斜长角闪岩和斜长角闪岩是大洋富铁拉斑玄武岩经变质作用而形成的，矿床的成因类型为风化残积型超贫铁矿床。

Currently in the whole world,Beypazari trona solution project is the largest mining engineering with the methods of solution mining and intersected well drilling.

土耳其贝帕扎里天然碱矿采卤工程是目前世界范围内采用对接井水溶开采方法进行采矿的最大规模的天然碱采矿工程。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。