开采

However in our country since 1980s huge number of non-renewable resources have been wasted and lost by either adopting some unadvanced methods to mine and smelt or by exporting them overseas, what a pity!

而我国自八十年代以来将大量的不可再生资源或是采用一些落后的方式开采、冶炼，浪费了不可再生资源，或是出口国外，损失了大量的不可再生资源，实在令人可惜！

On the basis of producing status quo of outlying oil well and stripper/low permeability oil well,a new type of mobile pumping equipment—CYC20 pumping truck is developed.It is based on the underbalance production principle,using specially made swab direct produce crude oil in casing.

针对边远油井、低产低渗油井开采的现状，研制开发出了一种新型移动抽油设备———CYC2 0型抽油车，它根据负压采油工艺原理，利用特制的油抽子在套管中直接抽汲原油进行采油。

We should not use water base working fluid, if have to, we should make it in the underpressure condition.

因此，在低渗透砂岩气藏的开采过程中应尽量避免使用水基工作液，如果要用水基工作液，应使压差处于欠压状态。

Multinational companies are unethically exploiting the plant genetic resources of developing countries.

一些跨国公司在不顾道义地开采发展中国家的植物遗传资源。

Multinational companies are unethically exploiting the plant genetic resources of developing countries.

跨国公司正不道德地从发展中国家开采植物基因资源。

Then the sustainable development of Qitai artificial oasis was discussed. Researches showed that the oasis development has gone through three phases: The first was harmonic stage before the middle of 20, the oasis developed according to water resources. The second was unharmonic stage from 1950's to 1980's because of unreasonable policies, that is cultivated area enlarged rapidly and water resources exploited backward. As a result, land output was lower, and environment destroyed heavily. The third stage is after 1980's, the new fragile balance between oasis and its environment was established on the base of the more and more ground water utilization.

研究认为奇台人工绿洲人地关系发展经历了三个阶段：第一阶段是20世纪50年代以前，&以水定地&的相对协调发展时期；第二阶段是20世纪50-80年代人地关系发展失衡时期，人工绿洲迅速扩张，水资源开发滞后，耕地因缺水灌溉而成为低产田，环境破坏严重，人地发展失衡的原因是政策因素；第三阶段是20世纪90年代以来人地关系脆弱平衡时期，决定其平衡的因素是不断增加的地下水开采量。

As the potential technique to reduce greenhouse effect, geological sequestration of CO2 in deep unminable coal seams is competent for storage of CO2 released during the forthcoming 26 to 46 years in China, especially in those coal energy bases in North China.

在我国，深部不可开采煤层处置CO2显示了巨大的潜力，可以处置26~46年的CO2排放量，尤其在华北煤炭能源基地具有良好的应用前景。

Until 30 years ago, it had lain undiscovered, unmined and uninhabited.

直到30年前，这块大陆还未被人发现、未被开采，也无人居住。

For example, it is offering impoverished but mineral-rich Guinea US$1.5 billion for a 47% stake in the world's largest unmined reserves of iron ore.

早前中国为购买世界上最大的尚未开采的铁矿石，向几内亚提供15亿美元购买该矿47%的股份。

Osisko has invested almost $1-billion to develop the 6.3-million ounce mine, the country's largest unmined gold deposit.

Osisko已投资了近10亿美元开发630万盎司矿，全国最大的未开采金矿。

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。