Based on the "surface mine long term planing model" the stepwise mining limit optimization model has been set up for inclined ore bed.
在倾斜矿床露天矿长远规划模型的基础上，建立了分期开采境界优化模型。
Dave Noonan, the national secretary of the Construction, Forestry, Mining and Energy Union, says Australia must limit the influx of foreign workers.
建筑、林业、矿产和能源联合会全国事务长戴夫·努南说，澳大利亚必须限制外国工人涌入。
As natural sandstone resources shortage, countries gradually has formulated a series of policies and regulations to limit natural sand mining.
随着天然砂石资源的逐渐短缺，国家制定了一系列政策法规来限制天然砂石的开采。
However, the resource-bearing regions distribute uneven. The conditions of complex coal mining technology and biological environments limit the coal resource development of energy bases.
但是，我国煤炭资源地域分布不均衡，复杂的煤矿开采技术条件和生态环境制约着我国能源基地煤炭资源的开发。
Open-pit limit optimization is an important content in open-pit mining design and production process control.
露天境界优化是露天矿开采设计和生产过程控制的重要内容。
Using the Web data mining technology makes full use of the advantages of cyber education, like resource sharing and no time limit.
从数据挖掘技术的角度研究了三江并流带地区丰富的旅游地质资源数据 ，采用“数据概化”的方法对资源数据集进行“维归约”预处理 。
It also inquires into the limit and prospect of channel wave application in the Datong mining area, and introduces the working method.
探讨了大同矿区槽波应用的局限和前景。并介绍了工作方法。
Stress of soft rock in deep mining is close to strength limit state, rock is sensitive to outer disturbed loading, research project was put forward in order to study rock rheology disturbed effects.
深井软岩的应力状态接近于岩石强度极限状态，对外部扰动载荷十分敏感，为了研究这种高应力状态下岩石表现出的力学特性，提出了岩石流变扰动效应这一研究课题。
Stress of soft rock in deep mining is close to strength limit state, rock is sensitive to outer disturbed loading, research project was put forward in order to study rock rheology disturbed effects.
深井软岩的应力状态接近于岩石强度极限状态，对外部扰动载荷十分敏感，为了研究这种高应力状态下岩石表现出的力学特性，提出了岩石流变扰动效应这一研究课题。
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