可开采的

It is necessary for the sustainable development of underground coal mine enterprises to cultivate and promote the core competence.

培育和提升企业核心竞争力是井工开采煤矿企业可持续发展的必然要求。

Coal mining exists badly negative exteriority,it has restricted seriously the sustainable development of coal and diggings.

矿产资源开采存在着严重的负外部性，很大程度地影响到矿产资源及矿区的可持续利用和发展。

With high quality ,thick reservoirs recovery of more than 60% and SORs of about 0.3~0.5 are obtained but in thinner, and in anisotropic reservoirs with lower oil saturations large quantities of steam are required to heat the depleted reservoir and the overburden .

蒸汽辅助重力泄油是开采超稠油油藏的一个比较有效的方法，对于均质厚层状稠油油藏，采收率可达60%以上，油汽比可达0.3～0.5，具有较高的经济效益。

The key of miscible displacement is determination of miscible pressure based on the crude components and injected solvent.

混相驱是采收率较高的开采方法之一，其采收率可达90％以上。

If we adopt normal methods to exploit,we can not have any economic benefit,but if we adopt double step horizontal wells,it can increase drainable area greatly,enhance individual well producing rate, achieve the Tarim Oil field's exploiting rule of\"wide spacing,high production\".

若采用常规方式开采，毫无经济效益，而利用双台水平井可大大增加泄油面积，可提高单井产量，实现&稀井高产&的开发效果。

There are 339 reservoirs in especially high watercut stage with 1.52 billion tons of OOIP which accounts for 43.1 percent of the Shengli oildom. Development status and character of these oilfields has changed a lot. The paper has demonstrated the trend of development indexes.

特高含水期油田开采程度、开发状况、开发规律较前一阶段发生了变化，本文研究了常规水驱开发油藏特高含水期开发指标的变化规律，结果表明随着含水上升，液量下降，含水上升幅度减缓，产量、油井开井率及新井单井增加可采储量不断减小。

The convection heats that is apart from to 13 meters between the well heats the oil shale retorting mine process, heat the temperature as 600°C. Adopting single crack heating to need 4 years can make the whole hot solution district attain 500°C above, the adoption double crack heating need a year and can make whole hot solution the district attain 600°Cs or so.

3在井间距为13米的对流加热油页岩干馏开采过程中，加热温度为600℃，采用单裂缝加热需要4年就可使整个热解区域达到500℃以上，采用双裂缝加热需要1年就可使整个热解区域达到600℃左右。

FRP pultruded profiles include many shapes of profiles, grating,plant, antenna cover, cable tray, doors and windows,sporting goods,tool handle etc. They possess the characteristics of light weight, high strength, color fresh and beautiful , colourfast ,anti-corrosion, electric insulation, easy to design, good integrated benefit etc.

拉挤玻璃钢产品：包括型材、格栅、扁条、天线罩、门窗、体育运动用品、电缆桥架、工具手柄等，具有轻质高强、颜色美观大方、不褪色、防腐蚀、绝缘、可设计性强、综合效益好等突出的特点，广泛应用于建筑工程、化工防腐、能源开采、电工绝缘、交通运输、文体娱乐等领域。

A clear explanation of sustainable yield is presented and approaches to achieve groundwater sustainability are summarised.

文中对可持续开采量的定义进行了详细的解释，对实现地下水可持续开发的方法进行了总结。

They are ideally suited for surface hole, coal bed methane, mine rescue, directional and unconventional drilling applications up to 3,000 meters in depth.

是适合表土层钻井、煤层气开采、矿山抢险、定向钻井和反循环钻井等方面的理想设备，其钻井深度可达3000米。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。