开采

Zircon mines in these areas is a daunting task.

在这些地区开采锆石并不是一件容易的事。

With this faith we will be abIe to hew out of the mountain of despair a stone of hope.

有了这个信念，我们就能从绝望之山开采出希望之石。

This city is one of 3 when national protection extracts rare coalfield, it is the country is important advocate the anthracitic production base with cooking coal and Heilongjiang exclusive province.

该市是国家保护性开采的三个稀有煤田之一，是国家重要的主焦煤和黑龙江省唯一的无烟煤生产基地。

It is a stimulation method of oil field, using appropriative membrane separation device to separate nitrogen from the air.

它是利用专用的膜分离制氮注氮装置把空气中的氮气分离出来，针对稠油、稀油、气田等不同的油气藏特点，不同的开采方式采用不同的注氮工艺技术来达到油田增产的目的。

Through the analysis of factors relating to aquiferous features, contact with water, groundwater recharge, run-off , discharge and groundwater chemical characteristics, we determine the hydrogeological conditions in the NO.

通过对大南湖煤田一井田含水层特征、水力联系、地下水补给、径流与排泄及地下水化学特征等因素的分析，确定该井田水文地质条件类型，为矿床开采提供依据。

Through the analysis of factors relating to aquiferous features, contact with water, groundwater recharge, run-off, discharge and groundwater chemical characteristics, we determine the hydrogeological conditions in the NO.1 mine field and suggest a basis for deposit exploition.

摘要通过对大南湖煤田一田含水层特征、水力联系、地下水补给、径流与排泄及地下水化学特征等因素的分析，确定该井田水文地质条件类型，为矿床开采提供依据。

Mather: We knew about Athabasca even when I started with Shell in 69, but it was uneconomic, and about twenty years ago, the first operators went into the oil sands and began to understand how you could manage this particular resource.

马斯特：早在我69年接手壳牌时，我们就已经知道了阿萨巴斯卡地区的油砂，但它的开采太不经济了。大约二十年前，第一批工作人员进入了油砂田，开始了解该如何掌握这种特殊的资源。

Downhole throttling technology is to adjust downhole pressure through installing the throttle valve in an appropriate position on the tube. The gas flowing through the throttle valve is heated up by the geotherm and the conditions of gas hydrate formation are changed, so as to effectively prevent gas hydrate formation, decrease transportation pipeline pressure, eliminate attemperator, and reduce the cost of gas production.

井下节流技术将井下节流器置于油管某一适当位置来实现井筒节流降压，并充分利用地热对油管内流体加热，使节流后气流温度高于节流后压力条件下的水合物形成初始温度，从而达到降低地面管线压力，取消地面加热保温装置、降低气井开采成本的目的。

Aiming at the geological characteristics of NB35-2 heavy oil reservoir, conventional heavy oil in-situ autogenetic foam combination flooding recovery technology is proposed in this paper.

本文针对NB35-2稠油油藏地质特征，提出了普通稠油层内自生泡沫复合驱开采技术。

The natural Slates such as Slideproof Slate, Avianize Slate, Mosaic and Cuture Stone, the main products of our company mined from quarries formed through millions of years, are hard in quality and bright in color. Because of their unique layer structures, they have very strong flexural strength. Their wear-resistant and corrosion-resistant properties make them ideal building materials used for both interior and exterior.

主要产品是火烧板、亚光板、马赛克、文化石等天然板岩，开采于经过数亿万年形成的石材矿床，品质坚硬，色泽鲜明，其特殊的层状结果决定了它的抗折强度很高，尤其良好的耐磨、耐腐蚀的天然石材特征，使其成为一种地面、屋面、室内外墙面非常理想的建筑材料。

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。