What this thesis studies is to protect the security mining method under the condition of thickness collapsible loss.

本文所研究的就是巨厚湿陷性黄土层条件下保护地表安全的开采方法。

youdao

At the moment, this process costs more than ten times as much as conventional mining, but some countries might regard that as a small price to pay for security of supply.

目前来说，这个工艺的成本要十倍于传统的开采铀矿，不过一些国家可能会把它看作是为供应安全而付出的小小代价。

youdao

My research areas include, but are not limited to, databases, data mining, security, social networks, Internet applications and some mathematics.

我应该会在2010年毕业。我的研究领域包括：数据库、数据挖掘、安全、社会网络、互联网应用以及数学和其他。

youdao

At the time, Areva's chairman and chief executive, Luc Oursel, said that business would go on at its Niger mining operations after a number of measures to reinforce security had been set up.

WSJ: Car Bombs Hit Mine, Base in Niger

NGOs and big energy and mining companies, have signed up to a set of Voluntary Principles on Security and Human Rights.

ECONOMIST: How companies manage risks to their reputation

The around-the-clock mining operation involves dozens of specialists drawn from across the U.S. national-security agencies.

WSJ: Spies Piece Together al Qaeda Playbook