开采

Then use a hypaethral quarry to do the ecological and environmental impact assessment and forecast. And tick off some material prevention and cure steps in opencast working, include engineering and ecological steps.

再结合某露天采石场进行生态环境影响评价与预测，并列出露天开采所应采取的具体的防治措施，包括工程措施和生物措施。

By using ideologies of logistic planning and methods of linear programming, the mathematic model of logistics distribution is established to study rock dumping scheme optimization for hypaethral mines with three-dimensional block structure.

以矿山的三维块状模型为基础，将物流规划思想和线性规划方法相结合，建立物流运输线性规划数学模型，研究露天矿山的排岩优化问题，得出在最小运输功下开采境界内所有岩块去往各排岩场的流向和流量。

The study proved that uranium and thorium tend to detach from each other in hypergenesis while they are tightly paragenous in the endogenic process.

而这些稀有元素多含有放射性同位素，因此在对这种稀有多金属矿开采过程中的放射性污染问题也应该得到重视。

While the humans nestle into their camp tucked between a grove of manilkara trees and hyphaene palms, buffalo and elephants emerge from the forest to feed in the clearing.

当人类进入自然公园开始开采各种热带植物后，水牛和大象被迫走出森林到空旷的地方觅食。

Long-term radom exploration has caused great effect to the ecology, the problems such as plant cover destroy, land impropriation, pollution, land subsidance, land collapse, raise in many places, blocking the developing of local economy.

多年来的无序开采，对生态环境造成很大的破坏和影响，出现了山体植被遭受破坏、土地被占用、环境受污染、诱发地面沉降、地面塌陷等一系列问题，已影响到国民经济的发展。随着省人大和省政府关于限制开山采石和保护环境等政策、法规出台和落实，近几年乱采滥挖现象基本得到了有效的遏制。

Along with the mining in large scale and the development of industry and communication in the Shaanxi-Nei Menggu contiguous area s,a new appearance of soil and water loss caused by disordered exca-vation and indiscriminated discard is extremely universal,making the local ecological environment whichwas weak originally more worse.

随着陕蒙接壤地带大规模地开采煤炭及工、交建设的开展，乱挖滥弃造成新的水土流失的现象十分普遍，使该地区本来很脆弱的生态环境更加恶化。

The aggressive search for, and extraction of, oil by north-sponsored companies is not only messing up the environment but also inflaming tensions with the southern government.

北方资助的公司在南方勘探、开采石油富於侵犯意味，不止破坏环境，也使南北方政府间的紧张关系火上浇油。

The aggressive search for, and extraction of, oil by north-sponsored companies is not only messing up the environment but also inflaming tensions with the southern government.

北方资助的公司在南方勘探、开采石油富于侵犯意味，不止破坏环境，也使南北方政府间的紧张关系火上浇油。

Aim at Gudong oldfield design horizontal well in face of old well production, higher water cut、lower production risk, study confirm intraformational bed and configuration anatomise, Gudong 7P11 well horizontal interval along lateral accretion body, lie fifthly lateral stacking reservoir.

针对孤东油田老区水平井设计中，面临周边均有老井开采，含水较高、产量较低的风险，进行夹层识别和构型解剖研究。

A series of profile numerical simulation are based on the datas of core flooding experiment, including the homogeneous profile positive rhythm section, the rhythm section, interlining profile, interlayer heterogeneity section, intraformational heterogeneity of reservoir section, the actual reservoir simulation. The the section of displacement mechanism of core flow method and the datas of core flooding experiments take into account, the EOR scheme of later stage is CO2 preslug followed by the N2 slug flooding, at last is the waterflooding or depletion type of drive..

为了进一步分析注CO2／N2段塞驱对扫油效率的影响，在岩芯驱替实验的基础上对N2推进CO2段塞驱进行了均质剖面、正韵律剖面、反韵律剖面、隔层剖面、层间非均质剖面、层内非均质剖面、实际油藏剖面的数值模拟研究，通过对比研究，初步认为高11油田在开发中后期提高采收率技术上可选取在适当高的压力条件下，先注前置CO2段塞驱，后续再注N2段塞顶替驱，然后再转注水或衰竭开采的驱替方式。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。